diff --git a/render/gles2/shaders/quad.frag b/render/gles2/shaders/quad.frag
index f9712797..97d3a31c 100644
--- a/render/gles2/shaders/quad.frag
+++ b/render/gles2/shaders/quad.frag
@@ -1,4 +1,9 @@
+#ifdef GL_FRAGMENT_PRECISION_HIGH
+precision highp float;
+#else
 precision mediump float;
+#endif
+
 varying vec4 v_color;
 varying vec2 v_texcoord;
 uniform vec4 color;
diff --git a/render/gles2/shaders/tex_external.frag b/render/gles2/shaders/tex_external.frag
index 05eac503..73909fe0 100644
--- a/render/gles2/shaders/tex_external.frag
+++ b/render/gles2/shaders/tex_external.frag
@@ -1,6 +1,11 @@
 #extension GL_OES_EGL_image_external : require
 
+#ifdef GL_FRAGMENT_PRECISION_HIGH
+precision highp float;
+#else
 precision mediump float;
+#endif
+
 varying vec2 v_texcoord;
 uniform samplerExternalOES texture0;
 uniform float alpha;
diff --git a/render/gles2/shaders/tex_rgba.frag b/render/gles2/shaders/tex_rgba.frag
index c2e17a90..c0a0dea6 100644
--- a/render/gles2/shaders/tex_rgba.frag
+++ b/render/gles2/shaders/tex_rgba.frag
@@ -1,4 +1,9 @@
+#ifdef GL_FRAGMENT_PRECISION_HIGH
+precision highp float;
+#else
 precision mediump float;
+#endif
+
 varying vec2 v_texcoord;
 uniform sampler2D tex;
 uniform float alpha;
diff --git a/render/gles2/shaders/tex_rgbx.frag b/render/gles2/shaders/tex_rgbx.frag
index 42ddf92f..ae40ad53 100644
--- a/render/gles2/shaders/tex_rgbx.frag
+++ b/render/gles2/shaders/tex_rgbx.frag
@@ -1,4 +1,9 @@
+#ifdef GL_FRAGMENT_PRECISION_HIGH
+precision highp float;
+#else
 precision mediump float;
+#endif
+
 varying vec2 v_texcoord;
 uniform sampler2D tex;
 uniform float alpha;