diff --git a/src/google_map.js b/src/google_map.js
index ce8d614..422f5a0 100644
--- a/src/google_map.js
+++ b/src/google_map.js
@@ -18,6 +18,7 @@ import isArraysEqualEps from './utils/array_helper';
 import isPlainObject from './utils/is_plain_object';
 import pick from './utils/pick';
 import raf from './utils/raf';
+import log2 from './utils/math/log2';
 
 import assign from 'lodash/object/assign';
 import isNumber from 'lodash/lang/isNumber';
@@ -311,7 +312,7 @@ export default class GoogleMap extends Component {
       const tilesPerWidth = Math.ceil(this.geoService_.getWidth() / K_GOOGLE_TILE_SIZE) + 2;
       const tilesPerHeight = Math.ceil(this.geoService_.getHeight() / K_GOOGLE_TILE_SIZE) + 2;
       const maxTilesPerDim = Math.max(tilesPerWidth, tilesPerHeight);
-      return Math.ceil(Math.log2(maxTilesPerDim));
+      return Math.ceil(log2(maxTilesPerDim));
     }
     return DEFAULT_MIN_ZOOM;
   }
@@ -870,4 +871,3 @@ export default class GoogleMap extends Component {
     );
   }
 }
-
diff --git a/src/utils/loaders/google_map_loader.js b/src/utils/loaders/google_map_loader.js
index dfab181..ba8d254 100644
--- a/src/utils/loaders/google_map_loader.js
+++ b/src/utils/loaders/google_map_loader.js
@@ -49,7 +49,7 @@ export default function googleMapLoader(bootstrapURLKeys) {
 
     if (process.env.NODE_ENV !== 'production') {
       if (find(Object.keys(bootstrapURLKeys), 'callback')) {
-        console.error('"callback" key in bootstrapURLKeys is not allowed, ' +
+        console.error('"callback" key in bootstrapURLKeys is not allowed, ' + // eslint-disable-line
                       'use onGoogleApiLoaded property instead');
         throw new Error('"callback" key in bootstrapURLKeys is not allowed, ' +
                         'use onGoogleApiLoaded property instead');
diff --git a/src/utils/math/log2.js b/src/utils/math/log2.js
new file mode 100644
index 0000000..aaf7cba
--- /dev/null
+++ b/src/utils/math/log2.js
@@ -0,0 +1,6 @@
+
+const log2 = Math.log2
+  ? Math.log2
+  : (x) => Math.log(x) / Math.LN2;
+
+export default log2;
diff --git a/src/utils/utils.js b/src/utils/utils.js
index 70e9841..4345dd6 100644
--- a/src/utils/utils.js
+++ b/src/utils/utils.js
@@ -1,4 +1,5 @@
 const GOOGLE_TILE_SIZE = 256;
+import log2 from './math/log2';
 
 function latLng2World({lat, lng}) {
   const sin = Math.sin(lat * Math.PI / 180);
@@ -74,8 +75,8 @@ export default {
       return null;
     }
 
-    const zoomX = Math.log2(width / GOOGLE_TILE_SIZE / dx);
-    const zoomY = Math.log2(height / GOOGLE_TILE_SIZE / dy);
+    const zoomX = log2(width / GOOGLE_TILE_SIZE / dx);
+    const zoomY = log2(height / GOOGLE_TILE_SIZE / dy);
     const zoom = Math.floor(EPS + Math.min(zoomX, zoomY));
 
     // TODO find center just unproject middle world point