diff --git a/src/mbgl/platform/gl.cpp b/src/mbgl/platform/gl.cpp
index c0c3bb1c7..4aace913d 100644
--- a/src/mbgl/platform/gl.cpp
+++ b/src/mbgl/platform/gl.cpp
@@ -70,6 +70,10 @@ PFNGLDELETEVERTEXARRAYSPROC DeleteVertexArrays = nullptr;
 PFNGLGENVERTEXARRAYSPROC GenVertexArrays = nullptr;
 PFNGLISVERTEXARRAYPROC IsVertexArray = nullptr;
 
+PFNGLGETPROGRAMBINARYPROC GetProgramBinary = nullptr;
+PFNGLPROGRAMBINARYPROC ProgramBinary = nullptr;
+PFNGLPROGRAMPARAMETERIPROC ProgramParameteri = nullptr;
+
 }
 }