diff --git a/lang/cem/cemcom.ansi/main.c b/lang/cem/cemcom.ansi/main.c
index 8efd6dfd3..4f56feb1d 100644
--- a/lang/cem/cemcom.ansi/main.c
+++ b/lang/cem/cemcom.ansi/main.c
@@ -92,7 +92,7 @@ main(argc, argv)
 #ifndef NOPP
 	inctable = (char **) Malloc(10 * sizeof(char *));
 	inctable[0] = "";
-	inctable[1] = "/usr/include";
+	inctable[1] = 0;
 	inctable[2] = 0;
 	inc_total = 3;
 	inc_max = 10;
diff --git a/lang/cem/cemcom/main.c b/lang/cem/cemcom/main.c
index 9b6707600..4c91ab2b8 100644
--- a/lang/cem/cemcom/main.c
+++ b/lang/cem/cemcom/main.c
@@ -97,8 +97,7 @@ main(argc, argv)
 #ifndef NOPP
 	inctable = (char **) Malloc(10 * sizeof(char *));
 	inctable[0] = "";
-	inctable[1] = "/usr/include";
-	inctable[2] = 0;
+	inctable[1] = 0;
 	inc_total = 3;
 	inc_max = 10;
 
diff --git a/lang/cem/cpp.ansi/main.c b/lang/cem/cpp.ansi/main.c
index 4c9a9b91e..46f9fd2b7 100644
--- a/lang/cem/cpp.ansi/main.c
+++ b/lang/cem/cpp.ansi/main.c
@@ -44,8 +44,7 @@ main(argc, argv)
 	inc_max = 10;
 	inc_total = 3;
 	inctable[0] = ".";
-	inctable[1] = "/usr/include";
-	inctable[2] = (char *) 0;
+	inctable[1] = 0;
 	init_pp();	/* initialise the preprocessor macros	*/
 
 	/*	Note: source file "-" indicates that the source is supplied