diff --git a/1984/decot/README.md b/1984/decot/README.md
index df7199c96..ddd287729 100644
--- a/1984/decot/README.md
+++ b/1984/decot/README.md
@@ -6,7 +6,7 @@ Dave Decot
 
         make all
 
-NOTE: This entry may not compile when using modern compilers.
+NOTE: This entry might not compile when using modern compilers.
 
 ## Judges' comments:
 
diff --git a/1989/tromp/README.md b/1989/tromp/README.md
index 474dda7a6..015473b6d 100644
--- a/1989/tromp/README.md
+++ b/1989/tromp/README.md
@@ -10,7 +10,7 @@
 
         make all
 
-	NOTE: This entry may not compile when using modern compilers.
+	NOTE: This entry might not compile when using modern compilers.
 
 ### To run
 
diff --git a/1990/dds/Makefile b/1990/dds/Makefile
index 209910999..dfe8512e8 100644
--- a/1990/dds/Makefile
+++ b/1990/dds/Makefile
@@ -194,7 +194,7 @@ all: data ${TARGET}
 	supernova deep_magic magic charon pluto
 
 ${PROG}: ${PROG}.c
-	@echo "NOTE: This entry may not compile when using modern compilers."
+	@echo "NOTE: This entry might not compile when using modern compilers."
 	${CC} ${CFLAGS} $< -o $@ ${LIBS}
 
 # alternative executable
diff --git a/1990/dg/Makefile b/1990/dg/Makefile
index dd49aee8f..294d5b1a3 100644
--- a/1990/dg/Makefile
+++ b/1990/dg/Makefile
@@ -192,7 +192,7 @@ all: data ${TARGET}
 	supernova deep_magic magic charon pluto
 
 ${PROG}: ${PROG}.c
-	@echo "NOTE: This entry may not compile when using modern compilers."
+	@echo "NOTE: This entry might not compile when using modern compilers."
 	${CC} ${CFLAGS} $< -o $@ ${LIBS}
 
 # alternative executable
diff --git a/1990/dg/README.md b/1990/dg/README.md
index 9740d9b33..f19b4b2fb 100644
--- a/1990/dg/README.md
+++ b/1990/dg/README.md
@@ -10,7 +10,7 @@
 
         make all
 
-	NOTE: This entry may not compile when using modern compilers.
+	NOTE: This entry might not compile when using modern compilers.
 
 ### To run
 
diff --git a/1990/scjones/Makefile b/1990/scjones/Makefile
index 4fdaf1839..51b477b58 100644
--- a/1990/scjones/Makefile
+++ b/1990/scjones/Makefile
@@ -192,7 +192,7 @@ all: data ${TARGET}
 	supernova deep_magic magic charon pluto
 
 ${PROG}: ${PROG}.c
-	@echo "NOTE: This entry may not compile when using modern compilers."
+	@echo "NOTE: This entry might not compile when using modern compilers."
 	${CC} ${CFLAGS} $< -o $@ ${LIBS}
 
 # alternative executable
diff --git a/1990/tbr/Makefile b/1990/tbr/Makefile
index 0f65b871c..6ed765629 100644
--- a/1990/tbr/Makefile
+++ b/1990/tbr/Makefile
@@ -194,7 +194,7 @@ all: data ${TARGET}
 	supernova deep_magic magic charon pluto
 
 ${PROG}: ${PROG}.c
-	@echo "NOTE: This entry may not compile when using modern compilers."
+	@echo "NOTE: This entry might not compile when using modern compilers."
 	${CC} ${CFLAGS} $< -o $@ ${LIBS}
 
 # alternative executable
diff --git a/1990/westley/Makefile b/1990/westley/Makefile
index 82be1834c..67e3f586b 100644
--- a/1990/westley/Makefile
+++ b/1990/westley/Makefile
@@ -193,7 +193,7 @@ all: data ${TARGET}
 	supernova deep_magic magic charon pluto
 
 ${PROG}: ${PROG}.c
-	@echo "NOTE: This entry may not compile when using modern compilers."
+	@echo "NOTE: This entry might not compile when using modern compilers."
 	${CC} ${CFLAGS} $< -o $@ ${LIBS}
 
 # alternative executable
diff --git a/1990/westley/README.md b/1990/westley/README.md
index e3ab0e9a0..3a0b9866b 100644
--- a/1990/westley/README.md
+++ b/1990/westley/README.md
@@ -10,7 +10,7 @@
 
         make all
 
-	NOTE: This entry may not compile when using modern compilers.
+	NOTE: This entry might not compile when using modern compilers.
 
 ### To run
 
diff --git a/1991/brnstnd/Makefile b/1991/brnstnd/Makefile
index 63882d1ba..70293bab7 100644
--- a/1991/brnstnd/Makefile
+++ b/1991/brnstnd/Makefile
@@ -195,7 +195,7 @@ all: data ${TARGET}
 	supernova deep_magic magic charon pluto
 
 ${PROG}: ${PROG}.c
-	@echo "NOTE: This entry may not compile when using modern compilers."
+	@echo "NOTE: This entry might not compile when using modern compilers."
 	${CC} ${CFLAGS} $< -o $@ ${LIBS}
 
 # alternative executable
diff --git a/1991/brnstnd/README.md b/1991/brnstnd/README.md
index 952f5a23b..bde8b3f8f 100644
--- a/1991/brnstnd/README.md
+++ b/1991/brnstnd/README.md
@@ -7,7 +7,7 @@
 
         make all
 
-	NOTE: This entry may not compile when using modern compilers.
+	NOTE: This entry might not compile when using modern compilers.
 
 ### To run
 
diff --git a/1992/westley/Makefile b/1992/westley/Makefile
index d30ec33c7..6536d89b7 100644
--- a/1992/westley/Makefile
+++ b/1992/westley/Makefile
@@ -193,7 +193,7 @@ all: data ${TARGET}
 	supernova deep_magic magic charon pluto
 
 ${PROG}: ${PROG}.c
-	@echo "NOTE: This entry may not compile when using modern compilers."
+	@echo "NOTE: This entry might not compile when using modern compilers."
 	${CC} ${CFLAGS} $< -o $@ ${LIBS}
 
 whereami: ${PROG}
diff --git a/1992/westley/README.md b/1992/westley/README.md
index 675b778d1..775abad3f 100644
--- a/1992/westley/README.md
+++ b/1992/westley/README.md
@@ -10,7 +10,7 @@
 
         make all
 
-	NOTE: This entry may not compile when using modern compilers.
+	NOTE: This entry might not compile when using modern compilers.
 
 ### To run
 
diff --git a/1993/jonth/Makefile b/1993/jonth/Makefile
index 4cd883669..b4bad404b 100644
--- a/1993/jonth/Makefile
+++ b/1993/jonth/Makefile
@@ -196,7 +196,7 @@ all: data ${TARGET}
 	supernova deep_magic magic charon pluto
 
 ${PROG}: ${PROG}.tmp.c
-	@echo "NOTE: This entry may not compile when using modern compilers."
+	@echo "NOTE: This entry might not compile when using modern compilers."
 	${CC} ${CFLAGS} $< -o $@ ${LIBS}
 
 ${PROG}.tmp.c: ${PROG}.c
diff --git a/1993/jonth/README.md b/1993/jonth/README.md
index ee7f6f6f3..fce529239 100644
--- a/1993/jonth/README.md
+++ b/1993/jonth/README.md
@@ -10,7 +10,7 @@
 
         make all
 
-	NOTE: This entry may not compile when using modern compilers.
+	NOTE: This entry might not compile when using modern compilers.
 
 ### To run
 
diff --git a/1993/lmfjyh/Makefile b/1993/lmfjyh/Makefile
index 00f6acee4..e918365a1 100644
--- a/1993/lmfjyh/Makefile
+++ b/1993/lmfjyh/Makefile
@@ -192,7 +192,7 @@ all: data ${TARGET}
 	supernova deep_magic magic charon pluto
 
 ${PROG}: ${PROG}.c
-	@echo "NOTE: This entry may not compile when using modern compilers."
+	@echo "NOTE: This entry might not compile when using modern compilers."
 	${RM} -f \"\;main\(\)\{puts\(\"Hello\ World!\"\)\;\}char\*C=\".c
 	${CP} lmfjyh.c \"\;main\(\)\{puts\(\"Hello\ World!\"\)\;\}char\*C=\".c
 	${CC} ${CFLAGS} \
diff --git a/1993/lmfjyh/README.md b/1993/lmfjyh/README.md
index c511400b8..d34b0caf0 100644
--- a/1993/lmfjyh/README.md
+++ b/1993/lmfjyh/README.md
@@ -9,7 +9,7 @@
 
         make all
 
-	NOTE: This entry may not compile when using modern compilers.
+	NOTE: This entry might not compile when using modern compilers.
 
 ### To run
 
diff --git a/1993/vanb/Makefile b/1993/vanb/Makefile
index ac6bafa37..2e2ac10ae 100644
--- a/1993/vanb/Makefile
+++ b/1993/vanb/Makefile
@@ -192,7 +192,7 @@ all: data ${TARGET}
 	supernova deep_magic magic charon pluto
 
 ${PROG}: ${PROG}.c
-	@echo "NOTE: This entry may not compile when using modern compilers."
+	@echo "NOTE: This entry might not compile when using modern compilers."
 	${CC} ${CFLAGS} $< -o $@ ${LIBS}
 
 # alternative executable
diff --git a/1993/vanb/README.md b/1993/vanb/README.md
index c44a6315a..35f1a3f18 100644
--- a/1993/vanb/README.md
+++ b/1993/vanb/README.md
@@ -10,7 +10,7 @@
 
         make all
 
-	NOTE: This entry may not compile when using modern compilers.
+	NOTE: This entry might not compile when using modern compilers.
 
 ### To run
 
diff --git a/1996/gandalf/Makefile b/1996/gandalf/Makefile
index 1555c8cce..5a46b5cac 100644
--- a/1996/gandalf/Makefile
+++ b/1996/gandalf/Makefile
@@ -194,7 +194,7 @@ all: data ${TARGET}
 	supernova deep_magic magic charon pluto
 
 ${PROG}: ${PROG}.c
-	@echo "NOTE: This entry may not compile when using modern compilers."
+	@echo "NOTE: This entry might not compile when using modern compilers."
 	${CC} ${CFLAGS} $< -o $@ ${LIBS}
 
 hatcat: ${PROG}
diff --git a/1996/gandalf/README.md b/1996/gandalf/README.md
index d202a0343..c85ce0fcd 100644
--- a/1996/gandalf/README.md
+++ b/1996/gandalf/README.md
@@ -14,7 +14,7 @@
 
         make all
 
-	NOTE: This entry may not compile when using modern compilers.
+	NOTE: This entry might not compile when using modern compilers.
 
 ### To run