diff --git a/Adjust/Adjust.m b/Adjust/Adjust.m
index 1fcd59a59..097b61045 100644
--- a/Adjust/Adjust.m
+++ b/Adjust/Adjust.m
@@ -319,7 +319,7 @@ + (void)setTestOptions:(NSDictionary *)testOptions {
 #pragma mark - Public instance methods
 
 - (void)initSdk:(ADJConfig *)adjustConfig {
-    if (! [self isSignerPresent]) {
+    if (![self isSignerPresent]) {
         [self.logger error:@"Missing signature library, SDK can't be initialised"];
         return;
     }