diff --git a/tools/llvm-config/llvm-config.cpp b/tools/llvm-config/llvm-config.cpp
index 641c2c4e69c..79fd7f8c5ae 100644
--- a/tools/llvm-config/llvm-config.cpp
+++ b/tools/llvm-config/llvm-config.cpp
@@ -206,6 +206,7 @@ int main(int argc, char **argv) {
     ActiveObjRoot = LLVM_OBJ_ROOT;
   } else {
     IsInDevelopmentTree = false;
+    DevelopmentTreeLayout = MakefileStyle; // Initialized to avoid warnings.
   }
 
   // Compute various directory locations based on the derived location