diff --git a/TARGETS b/TARGETS
index a7f8a7306..42785f38e 100644
--- a/TARGETS
+++ b/TARGETS
@@ -447,24 +447,26 @@ cpp_library(
     external_deps = ROCKSDB_EXTERNAL_DEPS,
 )
 
-cpp_binary(
-    name = "c_test_bin",
-    srcs = ["db/c_test.c"],
-    arch_preprocessor_flags = ROCKSDB_ARCH_PREPROCESSOR_FLAGS,
-    os_preprocessor_flags = ROCKSDB_OS_PREPROCESSOR_FLAGS,
-    compiler_flags = ROCKSDB_COMPILER_FLAGS,
-    preprocessor_flags = ROCKSDB_PREPROCESSOR_FLAGS,
-    deps = [":rocksdb_test_lib"],
-)
+if not is_opt_mode:
+    cpp_binary(
+        name = "c_test_bin",
+        srcs = ["db/c_test.c"],
+        arch_preprocessor_flags = ROCKSDB_ARCH_PREPROCESSOR_FLAGS,
+        os_preprocessor_flags = ROCKSDB_OS_PREPROCESSOR_FLAGS,
+        compiler_flags = ROCKSDB_COMPILER_FLAGS,
+        preprocessor_flags = ROCKSDB_PREPROCESSOR_FLAGS,
+        deps = [":rocksdb_test_lib"],
+    )
 
-custom_unittest(
-    "c_test",
-    command = [
-        native.package_name() + "/buckifier/rocks_test_runner.sh",
-        "$(location :{})".format("c_test_bin"),
-    ],
-    type = "simple",
-)
+if not is_opt_mode:
+    custom_unittest(
+        "c_test",
+        command = [
+            native.package_name() + "/buckifier/rocks_test_runner.sh",
+            "$(location :{})".format("c_test_bin"),
+        ],
+        type = "simple",
+    )
 
 cpp_library(
     name = "env_basic_test_lib",
diff --git a/buckifier/targets_builder.py b/buckifier/targets_builder.py
index a86c0a40c..73c289a8a 100644
--- a/buckifier/targets_builder.py
+++ b/buckifier/targets_builder.py
@@ -78,24 +78,26 @@ class TARGETSBuilder(object):
 
     def add_c_test(self):
         self.targets_file.write("""
-cpp_binary(
-    name = "c_test_bin",
-    srcs = ["db/c_test.c"],
-    arch_preprocessor_flags = ROCKSDB_ARCH_PREPROCESSOR_FLAGS,
-    os_preprocessor_flags = ROCKSDB_OS_PREPROCESSOR_FLAGS,
-    compiler_flags = ROCKSDB_COMPILER_FLAGS,
-    preprocessor_flags = ROCKSDB_PREPROCESSOR_FLAGS,
-    deps = [":rocksdb_test_lib"],
-)
+if not is_opt_mode:
+    cpp_binary(
+        name = "c_test_bin",
+        srcs = ["db/c_test.c"],
+        arch_preprocessor_flags = ROCKSDB_ARCH_PREPROCESSOR_FLAGS,
+        os_preprocessor_flags = ROCKSDB_OS_PREPROCESSOR_FLAGS,
+        compiler_flags = ROCKSDB_COMPILER_FLAGS,
+        preprocessor_flags = ROCKSDB_PREPROCESSOR_FLAGS,
+        deps = [":rocksdb_test_lib"],
+    )
 
-custom_unittest(
-    "c_test",
-    command = [
-        native.package_name() + "/buckifier/rocks_test_runner.sh",
-        "$(location :{})".format("c_test_bin"),
-    ],
-    type = "simple",
-)
+if not is_opt_mode:
+    custom_unittest(
+        "c_test",
+        command = [
+            native.package_name() + "/buckifier/rocks_test_runner.sh",
+            "$(location :{})".format("c_test_bin"),
+        ],
+        type = "simple",
+    )
 """)
 
     def register_test(self,