diff --git a/renderdoc/driver/shaders/dxbc/dxbc_spdb.cpp b/renderdoc/driver/shaders/dxbc/dxbc_spdb.cpp
index e40589d5d..444204f33 100644
--- a/renderdoc/driver/shaders/dxbc/dxbc_spdb.cpp
+++ b/renderdoc/driver/shaders/dxbc/dxbc_spdb.cpp
@@ -348,7 +348,7 @@ SPDBChunk::SPDBChunk(void *chunk)
     RDCASSERT(moduledata[0] == CV_SIGNATURE_C13);
 
     std::string localName;
-    CV_typ_t localType;
+    CV_typ_t localType = 0;
 
     byte *basePtr = (byte *)&moduledata[1];