diff --git a/src/ol/color/color.js b/src/ol/color/color.js
index 2a4e460c0f..6f7f44fff4 100644
--- a/src/ol/color/color.js
+++ b/src/ol/color/color.js
@@ -242,7 +242,7 @@ ol.color.fromStringInternal_ = function(s) {
     color = [r, g, b, 1];
     return ol.color.normalize(color, color);
   } else {
-    throw new Error(s + ' is not a valid color');
+    goog.asserts.fail(s + ' is not a valid color');
   }
 
 };
diff --git a/src/ol/geom/simplegeometry.js b/src/ol/geom/simplegeometry.js
index b8cef3f7b8..25858af61a 100644
--- a/src/ol/geom/simplegeometry.js
+++ b/src/ol/geom/simplegeometry.js
@@ -57,7 +57,7 @@ ol.geom.SimpleGeometry.getLayoutForStride_ = function(stride) {
   } else if (stride == 4) {
     return ol.geom.GeometryLayout.XYZM;
   } else {
-    throw new Error('unsupported stride: ' + stride);
+    goog.asserts.fail('unsupported stride: ' + stride);
   }
 };
 
@@ -77,7 +77,7 @@ ol.geom.SimpleGeometry.getStrideForLayout_ = function(layout) {
   } else if (layout == ol.geom.GeometryLayout.XYZM) {
     return 4;
   } else {
-    throw new Error('unsupported layout: ' + layout);
+    goog.asserts.fail('unsupported layout: ' + layout);
   }
 };