diff --git a/source/fuzz/fuzzer_pass_apply_id_synonyms.cpp b/source/fuzz/fuzzer_pass_apply_id_synonyms.cpp
index 30884a6..2025821 100644
--- a/source/fuzz/fuzzer_pass_apply_id_synonyms.cpp
+++ b/source/fuzz/fuzzer_pass_apply_id_synonyms.cpp
@@ -38,16 +38,20 @@
        GetTransformationContext()
            ->GetFactManager()
            ->GetIdsForWhichSynonymsAreKnown(GetIRContext())) {
-    // Gather up all uses of |id_with_known_synonym|, and then subsequently
-    // iterate over these uses.  We use this separation because, when
-    // considering a given use, we might apply a transformation that will
+    // Gather up all uses of |id_with_known_synonym| as a regular id, and
+    // subsequently iterate over these uses.  We use this separation because,
+    // when considering a given use, we might apply a transformation that will
     // invalidate the def-use manager.
     std::vector<std::pair<opt::Instruction*, uint32_t>> uses;
     GetIRContext()->get_def_use_mgr()->ForEachUse(
         id_with_known_synonyms,
         [&uses](opt::Instruction* use_inst, uint32_t use_index) -> void {
-          uses.emplace_back(
-              std::pair<opt::Instruction*, uint32_t>(use_inst, use_index));
+          // We only gather up regular id uses; e.g. we do not include a use of
+          // the id as the scope for an atomic operation.
+          if (use_inst->GetOperand(use_index).type == SPV_OPERAND_TYPE_ID) {
+            uses.emplace_back(
+                std::pair<opt::Instruction*, uint32_t>(use_inst, use_index));
+          }
         });
 
     for (auto& use : uses) {