diff --git a/src/Magnum/GL/Test/AbstractShaderProgramGLTest.cpp b/src/Magnum/GL/Test/AbstractShaderProgramGLTest.cpp
index f39a856b1..56c7adaef 100644
--- a/src/Magnum/GL/Test/AbstractShaderProgramGLTest.cpp
+++ b/src/Magnum/GL/Test/AbstractShaderProgramGLTest.cpp
@@ -558,8 +558,8 @@ struct MyDoubleShader: AbstractShaderProgram {
 MyDoubleShader::MyDoubleShader() {
     Utility::Resource rs("AbstractShaderProgramGLTest");
 
-    Shader vert(Version::GL400, Shader::Type::Vertex);
-    Shader frag(Version::GL400, Shader::Type::Fragment);
+    Shader vert(Version::GL320, Shader::Type::Vertex);
+    Shader frag(Version::GL320, Shader::Type::Fragment);
     vert.addSource(rs.get("MyDoubleShader.vert"));
     frag.addSource(rs.get("MyDoubleShader.frag"));
 
diff --git a/src/Magnum/GL/Test/AbstractShaderProgramGLTestFiles/MyDoubleShader.frag b/src/Magnum/GL/Test/AbstractShaderProgramGLTestFiles/MyDoubleShader.frag
index 653e4863b..ad5ced24d 100644
--- a/src/Magnum/GL/Test/AbstractShaderProgramGLTestFiles/MyDoubleShader.frag
+++ b/src/Magnum/GL/Test/AbstractShaderProgramGLTestFiles/MyDoubleShader.frag
@@ -1,3 +1,5 @@
+#extension GL_ARB_gpu_shader_fp64: require
+
 uniform double multiplier;
 uniform dvec4 color;
 uniform dvec4 additions[3];
diff --git a/src/Magnum/GL/Test/AbstractShaderProgramGLTestFiles/MyDoubleShader.vert b/src/Magnum/GL/Test/AbstractShaderProgramGLTestFiles/MyDoubleShader.vert
index c079452f8..733442ca0 100644
--- a/src/Magnum/GL/Test/AbstractShaderProgramGLTestFiles/MyDoubleShader.vert
+++ b/src/Magnum/GL/Test/AbstractShaderProgramGLTestFiles/MyDoubleShader.vert
@@ -1,3 +1,5 @@
+#extension GL_ARB_gpu_shader_fp64: require
+
 in vec4 position;
 
 uniform dmat4 matrix;