diff --git a/SPIRV/GlslangToSpv.cpp b/SPIRV/GlslangToSpv.cpp
index b72f7ae..ef3e9de 100644
--- a/SPIRV/GlslangToSpv.cpp
+++ b/SPIRV/GlslangToSpv.cpp
@@ -7165,6 +7165,10 @@
     }
     if (symbol->getQualifier().hasBinding())
         builder.addDecoration(id, spv::DecorationBinding, symbol->getQualifier().layoutBinding);
+    else if (IsDescriptorResource(symbol->getType())) {
+        // default to 0
+        builder.addDecoration(id, spv::DecorationBinding, 0);
+    }
     if (symbol->getQualifier().hasAttachment())
         builder.addDecoration(id, spv::DecorationInputAttachmentIndex, symbol->getQualifier().layoutAttachment);
     if (glslangIntermediate->getXfbMode()) {