diff --git a/mediapipe/tasks/ios/test/vision/image_classifier/MPPImageClassifierTests.m b/mediapipe/tasks/ios/test/vision/image_classifier/MPPImageClassifierTests.m
index d873d409..7eb93df8 100644
--- a/mediapipe/tasks/ios/test/vision/image_classifier/MPPImageClassifierTests.m
+++ b/mediapipe/tasks/ios/test/vision/image_classifier/MPPImageClassifierTests.m
@@ -652,7 +652,8 @@ static NSString *const kLiveStreamTestsDictExpectationKey = @"expectation";
                       }];
   AssertEqualErrors(error, expectedError);
 
-  [self waitForExpectations:@[ expectation ] timeout:0.5f];
+  NSTimeInterval timeout = 0.5f;
+  [self waitForExpectations:@[ expectation ] timeout:timeout];
 }
 
 - (void)testClassifyWithLiveStreamModeSucceeds {
@@ -699,7 +700,8 @@ static NSString *const kLiveStreamTestsDictExpectationKey = @"expectation";
     XCTAssertTrue([imageClassifier classifyAsyncImage:image timestampInMilliseconds:i error:nil]);
   }
 
-  [self waitForExpectations:@[ expectation ] timeout:0.5f];
+  NSTimeInterval timeout = 0.5f;
+  [self waitForExpectations:@[ expectation ] timeout:timeout];
 }
 
 - (void)imageClassifier:(MPPImageClassifier *)imageClassifier
diff --git a/mediapipe/tasks/ios/test/vision/object_detector/MPPObjectDetectorTests.m b/mediapipe/tasks/ios/test/vision/object_detector/MPPObjectDetectorTests.m
index fd9466b7..d3407874 100644
--- a/mediapipe/tasks/ios/test/vision/object_detector/MPPObjectDetectorTests.m
+++ b/mediapipe/tasks/ios/test/vision/object_detector/MPPObjectDetectorTests.m
@@ -715,7 +715,7 @@ static const float scoreDifferenceTolerance = 0.02f;
     XCTAssertTrue([objectDetector detectAsyncInImage:image timestampInMilliseconds:i error:nil]);
   }
 
-  [self waitForExpectations:@[ expectation ] timeout:0.5];
+  [self waitForExpectations:@[ expectation ] timeout:0.5f];
 }
 
 @end