diff --git a/lang/cem/cemcom/idf.c b/lang/cem/cemcom/idf.c
index 0bdb92989..3863a0690 100644
--- a/lang/cem/cemcom/idf.c
+++ b/lang/cem/cemcom/idf.c
@@ -5,6 +5,9 @@
 /* $Id$ */
 /*	IDENTIFIER  FIDDLING & SYMBOL TABLE HANDLING	*/
 
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
 #include	"lint.h"
 #include	<em_reg.h>
 #include	"nofloat.h"
diff --git a/lang/cem/cemcom/input.c b/lang/cem/cemcom/input.c
index 4d910dcd3..9131e9250 100644
--- a/lang/cem/cemcom/input.c
+++ b/lang/cem/cemcom/input.c
@@ -4,6 +4,9 @@
  */
 /* $Id$ */
 
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
 #include "inputtype.h"
 #include "file_info.h"
 #include "input.h"