diff --git a/Source/kwsys/testDynload.c b/Source/kwsys/testDynload.c
index 8168f9b1d3..7308530c03 100644
--- a/Source/kwsys/testDynload.c
+++ b/Source/kwsys/testDynload.c
@@ -4,7 +4,7 @@
 #define DL_EXPORT
 #endif
 
-DL_EXPORT int TestDynamicLoaderData;
+DL_EXPORT int TestDynamicLoaderData = 0;
 
 DL_EXPORT void TestDynamicLoaderFunction()
 {