diff --git a/lib/com_err/Makefile.in b/lib/com_err/Makefile.in
index 52fd6c5fc..3e10555ba 100644
--- a/lib/com_err/Makefile.in
+++ b/lib/com_err/Makefile.in
@@ -16,7 +16,8 @@ CFLAGS = @CFLAGS@
 LD_FLAGS = @LD_FLAGS@
 EXECSUFFIX=@EXECSUFFIX@
 
-AWK = @AWK@
+YACC = @YACC@
+LEX = @LEX@
 
 INSTALL = @INSTALL@
 INSTALL_DATA	= @INSTALL_DATA@
diff --git a/lib/sl/Makefile.in b/lib/sl/Makefile.in
index a621ff27d..73828a573 100644
--- a/lib/sl/Makefile.in
+++ b/lib/sl/Makefile.in
@@ -12,6 +12,8 @@ AR = ar
 RANLIB = @RANLIB@
 DEFS = @DEFS@
 CFLAGS = @CFLAGS@
+YACC = @YACC@
+LEX = @LEX@
 
 INSTALL = @INSTALL@
 INSTALL_DATA	= @INSTALL_DATA@