diff --git a/src/map.c b/src/map.c
index 282a494..ed65a8e 100644
--- a/src/map.c
+++ b/src/map.c
@@ -256,9 +256,14 @@ static void map_mouse(SDL_Event* event, double mx, double my) {
 }
 
 static void map_buttonZoom(char* str) {
-	if(strcmp(str, "btnZoomIn")==0)
-		map_zoom = MIN(2., map_zoom+0.5);
-	else if(strcmp(str, "btnZoomOut")==0)
-		map_zoom = MAX(0.5, map_zoom-0.5);
+	if(strcmp(str, "btnZoomIn")==0) {
+		map_zoom += (map_zoom >= 1.) ? 0.5 : 0.25;
+		map_zoom = MIN(2.5, map_zoom);
+	}
+
+	else if(strcmp(str, "btnZoomOut")==0) {
+		map_zoom -= (map_zoom > 1.) ? 0.5 : 0.25;
+		map_zoom = MAX(0.5, map_zoom);
+	}
 }