diff --git a/1992/adrian/Makefile b/1992/adrian/Makefile
index 32e4c820f..3bc8644bc 100644
--- a/1992/adrian/Makefile
+++ b/1992/adrian/Makefile
@@ -306,8 +306,8 @@ ZFORCE= zforce
 ZGREP= zgrep
 ZIP= zip
 ZIPCLOAK= zipcloak
-ZIPGREp= zipgrep
-ZIPINFo= zipinfo
+ZIPGREP= zipgrep
+ZIPINFO= zipinfo
 ZIPNOTE= zipnote
 ZIPSPLIT= zipsplit
 ZLESS= zless
diff --git a/1992/albert/Makefile b/1992/albert/Makefile
index 391713ff9..be325fda5 100644
--- a/1992/albert/Makefile
+++ b/1992/albert/Makefile
@@ -306,8 +306,8 @@ ZFORCE= zforce
 ZGREP= zgrep
 ZIP= zip
 ZIPCLOAK= zipcloak
-ZIPGREp= zipgrep
-ZIPINFo= zipinfo
+ZIPGREP= zipgrep
+ZIPINFO= zipinfo
 ZIPNOTE= zipnote
 ZIPSPLIT= zipsplit
 ZLESS= zless
diff --git a/1992/ant/Makefile b/1992/ant/Makefile
index 395157b4e..af02878a9 100644
--- a/1992/ant/Makefile
+++ b/1992/ant/Makefile
@@ -306,8 +306,8 @@ ZFORCE= zforce
 ZGREP= zgrep
 ZIP= zip
 ZIPCLOAK= zipcloak
-ZIPGREp= zipgrep
-ZIPINFo= zipinfo
+ZIPGREP= zipgrep
+ZIPINFO= zipinfo
 ZIPNOTE= zipnote
 ZIPSPLIT= zipsplit
 ZLESS= zless
diff --git a/1992/buzzard.1/Makefile b/1992/buzzard.1/Makefile
index 3a0072612..64285246a 100644
--- a/1992/buzzard.1/Makefile
+++ b/1992/buzzard.1/Makefile
@@ -306,8 +306,8 @@ ZFORCE= zforce
 ZGREP= zgrep
 ZIP= zip
 ZIPCLOAK= zipcloak
-ZIPGREp= zipgrep
-ZIPINFo= zipinfo
+ZIPGREP= zipgrep
+ZIPINFO= zipinfo
 ZIPNOTE= zipnote
 ZIPSPLIT= zipsplit
 ZLESS= zless
diff --git a/1992/buzzard.2/Makefile b/1992/buzzard.2/Makefile
index a56f27b6b..3540319ef 100644
--- a/1992/buzzard.2/Makefile
+++ b/1992/buzzard.2/Makefile
@@ -306,8 +306,8 @@ ZFORCE= zforce
 ZGREP= zgrep
 ZIP= zip
 ZIPCLOAK= zipcloak
-ZIPGREp= zipgrep
-ZIPINFo= zipinfo
+ZIPGREP= zipgrep
+ZIPINFO= zipinfo
 ZIPNOTE= zipnote
 ZIPSPLIT= zipsplit
 ZLESS= zless
diff --git a/1992/gson/Makefile b/1992/gson/Makefile
index 794e49dbc..2fbd53ffd 100644
--- a/1992/gson/Makefile
+++ b/1992/gson/Makefile
@@ -306,8 +306,8 @@ ZFORCE= zforce
 ZGREP= zgrep
 ZIP= zip
 ZIPCLOAK= zipcloak
-ZIPGREp= zipgrep
-ZIPINFo= zipinfo
+ZIPGREP= zipgrep
+ZIPINFO= zipinfo
 ZIPNOTE= zipnote
 ZIPSPLIT= zipsplit
 ZLESS= zless
diff --git a/1992/imc/Makefile b/1992/imc/Makefile
index 050e42f06..61f8ed65f 100644
--- a/1992/imc/Makefile
+++ b/1992/imc/Makefile
@@ -306,8 +306,8 @@ ZFORCE= zforce
 ZGREP= zgrep
 ZIP= zip
 ZIPCLOAK= zipcloak
-ZIPGREp= zipgrep
-ZIPINFo= zipinfo
+ZIPGREP= zipgrep
+ZIPINFO= zipinfo
 ZIPNOTE= zipnote
 ZIPSPLIT= zipsplit
 ZLESS= zless
diff --git a/1992/kivinen/Makefile b/1992/kivinen/Makefile
index d625c0708..0c0a2926a 100644
--- a/1992/kivinen/Makefile
+++ b/1992/kivinen/Makefile
@@ -306,8 +306,8 @@ ZFORCE= zforce
 ZGREP= zgrep
 ZIP= zip
 ZIPCLOAK= zipcloak
-ZIPGREp= zipgrep
-ZIPINFo= zipinfo
+ZIPGREP= zipgrep
+ZIPINFO= zipinfo
 ZIPNOTE= zipnote
 ZIPSPLIT= zipsplit
 ZLESS= zless
diff --git a/1992/lush/Makefile b/1992/lush/Makefile
index 500572ff5..ea1515f5d 100644
--- a/1992/lush/Makefile
+++ b/1992/lush/Makefile
@@ -306,8 +306,8 @@ ZFORCE= zforce
 ZGREP= zgrep
 ZIP= zip
 ZIPCLOAK= zipcloak
-ZIPGREp= zipgrep
-ZIPINFo= zipinfo
+ZIPGREP= zipgrep
+ZIPINFO= zipinfo
 ZIPNOTE= zipnote
 ZIPSPLIT= zipsplit
 ZLESS= zless
diff --git a/1992/marangon/Makefile b/1992/marangon/Makefile
index 3b66bba1e..06b5b027b 100644
--- a/1992/marangon/Makefile
+++ b/1992/marangon/Makefile
@@ -306,8 +306,8 @@ ZFORCE= zforce
 ZGREP= zgrep
 ZIP= zip
 ZIPCLOAK= zipcloak
-ZIPGREp= zipgrep
-ZIPINFo= zipinfo
+ZIPGREP= zipgrep
+ZIPINFO= zipinfo
 ZIPNOTE= zipnote
 ZIPSPLIT= zipsplit
 ZLESS= zless
diff --git a/1992/nathan/Makefile b/1992/nathan/Makefile
index cca692254..0373fd77e 100644
--- a/1992/nathan/Makefile
+++ b/1992/nathan/Makefile
@@ -306,8 +306,8 @@ ZFORCE= zforce
 ZGREP= zgrep
 ZIP= zip
 ZIPCLOAK= zipcloak
-ZIPGREp= zipgrep
-ZIPINFo= zipinfo
+ZIPGREP= zipgrep
+ZIPINFO= zipinfo
 ZIPNOTE= zipnote
 ZIPSPLIT= zipsplit
 ZLESS= zless
diff --git a/1992/vern/Makefile b/1992/vern/Makefile
index e13c36320..a463041a4 100644
--- a/1992/vern/Makefile
+++ b/1992/vern/Makefile
@@ -306,8 +306,8 @@ ZFORCE= zforce
 ZGREP= zgrep
 ZIP= zip
 ZIPCLOAK= zipcloak
-ZIPGREp= zipgrep
-ZIPINFo= zipinfo
+ZIPGREP= zipgrep
+ZIPINFO= zipinfo
 ZIPNOTE= zipnote
 ZIPSPLIT= zipsplit
 ZLESS= zless
diff --git a/1992/westley/Makefile b/1992/westley/Makefile
index 2bfbfbb2b..7c58392cf 100644
--- a/1992/westley/Makefile
+++ b/1992/westley/Makefile
@@ -306,8 +306,8 @@ ZFORCE= zforce
 ZGREP= zgrep
 ZIP= zip
 ZIPCLOAK= zipcloak
-ZIPGREp= zipgrep
-ZIPINFo= zipinfo
+ZIPGREP= zipgrep
+ZIPINFO= zipinfo
 ZIPNOTE= zipnote
 ZIPSPLIT= zipsplit
 ZLESS= zless