diff --git a/HZActivityIndicator/HZActivityIndicatorView.m b/HZActivityIndicator/HZActivityIndicatorView.m
index d5b610f..921542a 100644
--- a/HZActivityIndicator/HZActivityIndicatorView.m
+++ b/HZActivityIndicator/HZActivityIndicatorView.m
@@ -185,7 +185,7 @@ - (void)setIndicatorRadius:(NSUInteger)indicatorRadius
 
 - (void)setSteps:(NSUInteger)steps
 {
-    _anglePerStep = (360/steps) * M_PI / 180;
+    _anglePerStep = (360. / (CGFloat)steps) * M_PI / 180.;
     _steps = steps;
     [self setNeedsDisplay];
 }