diff --git a/src/modules/rangeproof/tests_impl.h b/src/modules/rangeproof/tests_impl.h
index 99c86d6e..c4cc666f 100644
--- a/src/modules/rangeproof/tests_impl.h
+++ b/src/modules/rangeproof/tests_impl.h
@@ -656,8 +656,8 @@ void test_rangeproof_fixed_vectors(void) {
         0xf5, 0x1e, 0x0d, 0xc5, 0x86, 0x78, 0x51, 0xa9, 0x00, 0x00, 0xef, 0x4d, 0xe2, 0x94, 0x60, 0x89,
         0x83, 0x04, 0xb4, 0x0e, 0x90, 0x10, 0x05, 0x1c, 0x7f, 0xd7, 0x33, 0x92, 0x1f, 0xe7, 0x74, 0x59
     };
-    size_t min_value_1;
-    size_t max_value_1;
+    uint64_t min_value_1;
+    uint64_t max_value_1;
     secp256k1_pedersen_commitment pc;
 
     CHECK(secp256k1_pedersen_commitment_parse(ctx, &pc, commit_1));