diff --git a/nq/source/keys.c b/nq/source/keys.c
index b8409f65e..ea5c159d9 100644
--- a/nq/source/keys.c
+++ b/nq/source/keys.c
@@ -39,6 +39,7 @@
 # include <strings.h>
 #endif
 
+#include <stdio.h>
 #include <stdlib.h>
 #include <ctype.h>
 
diff --git a/qw/source/keys.c b/qw/source/keys.c
index 8ac87f63e..05ded18d0 100644
--- a/qw/source/keys.c
+++ b/qw/source/keys.c
@@ -39,6 +39,7 @@
 # include <strings.h>
 #endif
 
+#include <stdio.h>
 #include <stdlib.h>
 #include <ctype.h>