diff --git a/parallaxmapping/parallaxmapping.cpp b/parallaxmapping/parallaxmapping.cpp
index e98912c0..58ba8b20 100644
--- a/parallaxmapping/parallaxmapping.cpp
+++ b/parallaxmapping/parallaxmapping.cpp
@@ -402,6 +402,7 @@ public:
 		{
 		case KEY_SPACE:
 		case GAMEPAD_BUTTON_A:
+		case TOUCH_DOUBLE_TAP:
 			toggleMappingMode();
 			break;
 		}
diff --git a/sphericalenvmapping/sphericalenvmapping.cpp b/sphericalenvmapping/sphericalenvmapping.cpp
index da752c27..373dcdfd 100644
--- a/sphericalenvmapping/sphericalenvmapping.cpp
+++ b/sphericalenvmapping/sphericalenvmapping.cpp
@@ -431,6 +431,7 @@ public:
 		case KEY_KPADD:
 		case KEY_SPACE:
 		case GAMEPAD_BUTTON_A:
+		case TOUCH_DOUBLE_TAP:
 			changeMatCapIndex(1);
 			break;
 		case KEY_KPSUB: