diff --git a/src/x86.cpp b/src/x86.cpp
index dc73c60590..5ad576300e 100644
--- a/src/x86.cpp
+++ b/src/x86.cpp
@@ -1390,7 +1390,7 @@ class MyArchitecture: public Assembler::Architecture {
   }
 
   virtual void* frameIp(void* stack) {
-    return *static_cast<void**>(stack);
+    return stack ? *static_cast<void**>(stack) : 0;
   }
 
   virtual unsigned frameHeaderSize() {