diff --git a/dlls/secur32/secur32.c b/dlls/secur32/secur32.c
index 894c90a290e..be1250c42d8 100644
--- a/dlls/secur32/secur32.c
+++ b/dlls/secur32/secur32.c
@@ -495,6 +495,7 @@ SecureProvider *SECUR32_addProvider(PSecurityFunctionTableA fnTableA,
         ret->lib = NULL;
         if (fnTableA || fnTableW)
         {
+            ret->moduleName = NULL;
             _makeFnTableA(&ret->fnTableA, fnTableA, fnTableW);
             _makeFnTableW(&ret->fnTableW, fnTableA, fnTableW);
             ret->loaded = TRUE;