diff --git a/SDWebImageWebPCoderTests/SDWebImageWebPCoderTests.m b/SDWebImageWebPCoderTests/SDWebImageWebPCoderTests.m
index 97e9b75..9c7b6d9 100644
--- a/SDWebImageWebPCoderTests/SDWebImageWebPCoderTests.m
+++ b/SDWebImageWebPCoderTests/SDWebImageWebPCoderTests.m
@@ -38,6 +38,8 @@ const int64_t kAsyncTestTimeout = 5;
 @implementation SDWebImageWebPCoderTests
 
 + (void)setUp {
+    [SDImageCache.sharedImageCache clearMemory];
+    [SDImageCache.sharedImageCache clearDiskOnCompletion:nil];
     [[SDImageCodersManager sharedManager] addCoder:[SDImageWebPCoder sharedCoder]];
 }