diff --git a/src/gl/shaders/gl_shader.cpp b/src/gl/shaders/gl_shader.cpp
index 72815f2e2d..3d4afdbcc8 100644
--- a/src/gl/shaders/gl_shader.cpp
+++ b/src/gl/shaders/gl_shader.cpp
@@ -94,7 +94,7 @@ bool FShader::Load(const char * name, const char * vert_prog_lump, const char *
 
 	if (lightbuffertype == GL_UNIFORM_BUFFER)
 	{
-		vp_comb.Format("#version 330 core\n#extension GL_ARB_uniform_buffer_object : require\n#define NUM_UBO_LIGHTS %d\n", lightbuffersize);
+		vp_comb.Format("#version 130\n#extension GL_ARB_uniform_buffer_object : require\n#define NUM_UBO_LIGHTS %d\n", lightbuffersize);
 	}
 	else
 	{
diff --git a/src/gl/system/gl_interface.cpp b/src/gl/system/gl_interface.cpp
index af03bf1d1f..5d4e8efebf 100644
--- a/src/gl/system/gl_interface.cpp
+++ b/src/gl/system/gl_interface.cpp
@@ -117,9 +117,9 @@ void gl_LoadExtensions()
 	else Printf("Emulating OpenGL v %s\n", version);
 
 	// Don't even start if it's lower than 3.0
-	if (strcmp(version, "3.3") < 0)
+	if (strcmp(version, "3.0") < 0)
 	{
-		I_FatalError("Unsupported OpenGL version.\nAt least OpenGL 3.3 is required to run " GAMENAME ".\n");
+		I_FatalError("Unsupported OpenGL version.\nAt least OpenGL 3.0 is required to run " GAMENAME ".\n");
 	}
 
 	// add 0.01 to account for roundoff errors making the number a tad smaller than the actual version