diff --git a/ReactiveObjC/RACBlockTrampoline.m b/ReactiveObjC/RACBlockTrampoline.m
index a2d589f1f..eaa0ea2f8 100644
--- a/ReactiveObjC/RACBlockTrampoline.m
+++ b/ReactiveObjC/RACBlockTrampoline.m
@@ -28,7 +28,7 @@ - (instancetype)initWithBlock:(id)block {
 + (id)invokeBlock:(id)block withArguments:(RACTuple *)arguments {
 	NSCParameterAssert(block != NULL);
 
-	RACBlockTrampoline *trampoline = [[self alloc] initWithBlock:block];
+	RACBlockTrampoline *trampoline = [(RACBlockTrampoline *)[self alloc] initWithBlock:block];
 	return [trampoline invokeWithArguments:arguments];
 }
 
diff --git a/ReactiveObjC/RACDisposable.m b/ReactiveObjC/RACDisposable.m
index 25f266977..3cba07f4f 100644
--- a/ReactiveObjC/RACDisposable.m
+++ b/ReactiveObjC/RACDisposable.m
@@ -52,7 +52,7 @@ - (instancetype)initWithBlock:(void (^)(void))block {
 }
 
 + (instancetype)disposableWithBlock:(void (^)(void))block {
-	return [[self alloc] initWithBlock:block];
+	return [(RACDisposable *)[self alloc] initWithBlock:block];
 }
 
 - (void)dealloc {