diff --git a/1985/applin/Makefile b/1985/applin/Makefile
index f691e3815..ce2cc984e 100644
--- a/1985/applin/Makefile
+++ b/1985/applin/Makefile
@@ -143,6 +143,7 @@ GENCAT= gencat
 GENSTRINGS= genstrings
 GETOPT= getopt
 GETOPTS= getopts
+GINDENT= gindent
 GNUMAKE= gnumake
 GREP= grep
 GROFF= groff
diff --git a/1985/august/Makefile b/1985/august/Makefile
index 369fd653e..cf405c52a 100644
--- a/1985/august/Makefile
+++ b/1985/august/Makefile
@@ -143,6 +143,7 @@ GENCAT= gencat
 GENSTRINGS= genstrings
 GETOPT= getopt
 GETOPTS= getopts
+GINDENT= gindent
 GNUMAKE= gnumake
 GREP= grep
 GROFF= groff
diff --git a/1985/lycklama/Makefile b/1985/lycklama/Makefile
index 8ab367ef8..1bb4080bc 100644
--- a/1985/lycklama/Makefile
+++ b/1985/lycklama/Makefile
@@ -143,6 +143,7 @@ GENCAT= gencat
 GENSTRINGS= genstrings
 GETOPT= getopt
 GETOPTS= getopts
+GINDENT= gindent
 GNUMAKE= gnumake
 GREP= grep
 GROFF= groff
diff --git a/1985/shapiro/Makefile b/1985/shapiro/Makefile
index 9c03f133a..7c5eb72b9 100644
--- a/1985/shapiro/Makefile
+++ b/1985/shapiro/Makefile
@@ -143,6 +143,7 @@ GENCAT= gencat
 GENSTRINGS= genstrings
 GETOPT= getopt
 GETOPTS= getopts
+GINDENT= gindent
 GNUMAKE= gnumake
 GREP= grep
 GROFF= groff
diff --git a/1985/sicherman/Makefile b/1985/sicherman/Makefile
index 2551086b7..da846e789 100644
--- a/1985/sicherman/Makefile
+++ b/1985/sicherman/Makefile
@@ -143,6 +143,7 @@ GENCAT= gencat
 GENSTRINGS= genstrings
 GETOPT= getopt
 GETOPTS= getopts
+GINDENT= gindent
 GNUMAKE= gnumake
 GREP= grep
 GROFF= groff