diff --git a/src/zmalloc.c b/src/zmalloc.c
index 31e686c4..3a3c579f 100644
--- a/src/zmalloc.c
+++ b/src/zmalloc.c
@@ -30,6 +30,7 @@
 
 #include <stdio.h>
 #include <stdlib.h>
+#include <stdint.h>
 
 /* This function provide us access to the original libc free(). This is useful
  * for instance to free results obtained by backtrace_symbols(). We need