diff --git a/extension/extension.cpp b/extension/extension.cpp
index 1d85d40..d9dddc7 100644
--- a/extension/extension.cpp
+++ b/extension/extension.cpp
@@ -236,7 +236,7 @@ static bool dumpCallback(const wchar_t* dump_path,
 
 	printf("Wrote minidump to: %ls\\%ls.dmp\n", dump_path, minidump_id);
 
-	sprintf(dumpStoragePath, "%ls\\%ls.txt", dump_path, minidump_id);
+	sprintf(dumpStoragePath, "%ls\\%ls.dmp.txt", dump_path, minidump_id);
 
 	FILE *extra = fopen(dumpStoragePath, "wb");
 	if (!extra) {