diff --git a/MangoFix.podspec b/MangoFix.podspec
index 6e4b698..747c68e 100644
--- a/MangoFix.podspec
+++ b/MangoFix.podspec
@@ -1,6 +1,6 @@
 Pod::Spec.new do |s|
 s.name         = "MangoFix"
-s.version      = "1.5.3"
+s.version      = "1.5.4"
 s.summary      = "MangoFix"
 s.description  = <<-DESC
   Mango is a DSL which syntax is very similar to Objective-C，Mango is also an iOS  App hotfix SDK. You can use Mango method replace any Objective-C method.
diff --git a/MangoFix/Compiler/AST/MFTypeSpecifier.m b/MangoFix/Compiler/AST/MFTypeSpecifier.m
index 5f31b12..54b884c 100644
--- a/MangoFix/Compiler/AST/MFTypeSpecifier.m
+++ b/MangoFix/Compiler/AST/MFTypeSpecifier.m
@@ -32,15 +32,6 @@ - (const char *)typeEncoding{
 		return _typeEncoding;
 	}
     
-    if (self.annotationList) {
-        for (MFAnnotation *annotation in self.annotationList) {
-            if ([annotation.name isEqualToString:@"@Signature"]) {
-                _typeEncoding = annotation.expr.cstringValue;
-                return _typeEncoding;
-            }
-        }
-    }
-    
 	if (self.typeKind == MF_TYPE_STRUCT || self.typeKind == MF_TYPE_STRUCT_LITERAL) {
 		MFStructDeclareTable *table = [MFStructDeclareTable shareInstance];
 		_typeEncoding = [table getStructDeclareWithName:self.structName].typeEncoding;
diff --git a/MangoFix/Execute/eval.m b/MangoFix/Execute/eval.m
index 282193a..0914325 100644
--- a/MangoFix/Execute/eval.m
+++ b/MangoFix/Execute/eval.m
@@ -1698,8 +1698,13 @@ static void eval_function_call_expression(MFInterpreter *inter, MFScopeChain *sc
                 [inter.stack push:retValue];
             }else{
                 const char *blockTypeEncoding = [MFBlock typeEncodingForBlock:callee.c2objectValue];
-                if (!blockTypeEncoding) {
-                    blockTypeEncoding =  [callee.type typeEncoding];
+                if (!blockTypeEncoding && callee.type.annotationList) {
+                    NSArray *annotationList = callee.type.annotationList;
+                    for (MFAnnotation *annotation in annotationList) {
+                        if ([annotation.name isEqualToString:@"@Signature"]) {
+                            blockTypeEncoding = annotation.expr.cstringValue;
+                        }
+                    }
                 }
                 
                 if (!blockTypeEncoding) {