diff --git a/include/zmq_utils.h b/include/zmq_utils.h
index 25acbfd0..a40df7e2 100644
--- a/include/zmq_utils.h
+++ b/include/zmq_utils.h
@@ -22,9 +22,22 @@
 
 #include <stdio.h>
 #include <string.h>
-#include <stdint.h>
 #include <stdlib.h>
 
+/*  Define integer types needed for event interface                          */
+#if defined ZMQ_HAVE_SOLARIS || defined ZMQ_HAVE_OPENVMS
+#   include <inttypes.h>
+#elif defined _MSC_VER && _MSC_VER < 1600
+#   ifndef int32_t
+typedef __int32 int32_t;
+#   endif
+#   ifndef uint16_t
+typedef unsigned __int16 uint16_t;
+#   endif
+#else
+#   include <stdint.h>
+#endif
+
 #ifdef __cplusplus
 extern "C" {
 #endif