diff --git a/src/ol/renderer/webgl/TileLayer.js b/src/ol/renderer/webgl/TileLayer.js
index 0540d0a69f..3565df7117 100644
--- a/src/ol/renderer/webgl/TileLayer.js
+++ b/src/ol/renderer/webgl/TileLayer.js
@@ -426,7 +426,10 @@ class WebGLTileLayerRenderer extends WebGLLayerRenderer {
           const uniformName = Uniforms.TILE_TEXTURE_PREFIX + textureIndex;
           gl.activeTexture(gl[textureProperty]);
           gl.bindTexture(gl.TEXTURE_2D, tileTexture.textures[textureIndex]);
-          gl.uniform1i(this.helper.getUniformLocation(uniformName), 0);
+          gl.uniform1i(
+            this.helper.getUniformLocation(uniformName),
+            textureIndex
+          );
         }
 
         const alpha =
diff --git a/src/ol/webgl/Helper.js b/src/ol/webgl/Helper.js
index fc580eb086..9fdb5e0573 100644
--- a/src/ol/webgl/Helper.js
+++ b/src/ol/webgl/Helper.js
@@ -284,7 +284,7 @@ class WebGLHelper extends Disposable {
 
     gl.getExtension('OES_element_index_uint');
     gl.getExtension('OES_texture_float');
-    gl.getExtension("OES_texture_float_linear");
+    gl.getExtension('OES_texture_float_linear');
 
     this.canvas_.addEventListener(
       ContextEventType.LOST,