diff --git a/lib/roken/roken.h.in b/lib/roken/roken.h.in
index 52a786c75..cf1b63b75 100644
--- a/lib/roken/roken.h.in
+++ b/lib/roken/roken.h.in
@@ -39,6 +39,7 @@
 #include <stdint.h>
 #endif
 #include <string.h>
+#include <limits.h>
 #include <signal.h>
 
 #ifndef ROKEN_LIB_FUNCTION