diff --git a/test/common/stats/stat_merger_corpus/clusterfuzz-testcase-minimized-stat_merger_fuzz_test-5675276891717632 b/test/common/stats/stat_merger_corpus/clusterfuzz-testcase-minimized-stat_merger_fuzz_test-5675276891717632
new file mode 100644
index 0000000000000..d565d75ac8ee2
--- /dev/null
+++ b/test/common/stats/stat_merger_corpus/clusterfuzz-testcase-minimized-stat_merger_fuzz_test-5675276891717632
@@ -0,0 +1 @@
+ÿö .. 
\ No newline at end of file
diff --git a/test/common/stats/stat_merger_fuzz_test.cc b/test/common/stats/stat_merger_fuzz_test.cc
index f3e84f14f632a..bd3e6b2dbc071 100644
--- a/test/common/stats/stat_merger_fuzz_test.cc
+++ b/test/common/stats/stat_merger_fuzz_test.cc
@@ -39,7 +39,7 @@ void testDynamicEncoding(absl::string_view data, SymbolTable& symbol_table) {
     // TODO(#10008): We should remove the "1 +" below, so we can get empty
     // segments, which trigger some inconsistent handling as described in that
     // bug.
-    uint32_t num_bytes = (1 + data[index]) & 0x7;
+    uint32_t num_bytes = 1 + (data[index] & 0x7);
 
     // Carve out the segment and use the 4th bit from the control-byte to
     // determine whether to treat this segment symbolic or not.