diff --git a/be/src/exprs/bloomfilter_predicate.h b/be/src/exprs/bloomfilter_predicate.h
index e90f02d4f1..a6b7f83636 100644
--- a/be/src/exprs/bloomfilter_predicate.h
+++ b/be/src/exprs/bloomfilter_predicate.h
@@ -206,11 +206,12 @@ struct StringFindOp {
 template <class BloomFilterAdaptor>
 struct FixedStringFindOp : public StringFindOp<BloomFilterAdaptor> {
     ALWAYS_INLINE bool find_olap_engine(const BloomFilterAdaptor& bloom_filter,
-                                        const void* data) const {
-        const auto* value = reinterpret_cast<const StringValue*>(data);
-        auto end_ptr = value->ptr + value->len - 1;
-        while (end_ptr > value->ptr && *end_ptr == '\0') --end_ptr;
-        return bloom_filter.test_bytes(value->ptr, end_ptr - value->ptr + 1);
+                                        const void* input_data) const {
+        const auto* value = reinterpret_cast<const StringValue*>(input_data);
+        int64_t size = value->len;
+        char* data = value->ptr;
+        while (size > 0 && data[size - 1] == '\0') size--;
+        return bloom_filter.test_bytes(value->ptr, size);
     }
 };