diff --git a/util/selftest.pl b/util/selftest.pl
index 4778c5ab01..7b32e9f4ff 100644
--- a/util/selftest.pl
+++ b/util/selftest.pl
@@ -78,7 +78,7 @@ print OUT "\n";
 
 print "Checking compiler...\n";
 if (open(TEST,">cctest.c")) {
-    print TEST "#include <stdio.h>\n#include <errno.h>\nmain(){printf(\"Hello world\\n\");}\n";
+    print TEST "#include <stdio.h>\n#include <stdlib.h>\n#include <errno.h>\nmain(){printf(\"Hello world\\n\");}\n";
     close(TEST);
     system("$cc -o cctest cctest.c");
     if (`./cctest` !~ /Hello world/) {
@@ -96,7 +96,7 @@ if (open(TEST,">cctest.c")) {
     print OUT "Can't create cctest.c\n";
 }
 if (open(TEST,">cctest.c")) {
-    print TEST "#include <openssl/opensslv.h>\nmain(){printf(OPENSSL_VERSION_TEXT);}\n";
+    print TEST "#include <stdio.h>\n#include <stdlib.h>\n#include <openssl/opensslv.h>\nmain(){printf(OPENSSL_VERSION_TEXT);}\n";
     close(TEST);
     system("$cc -o cctest -Iinclude cctest.c");
     $cctest = `./cctest`;