diff --git a/gsk/gskdebug.c b/gsk/gskdebug.c
index 4b315b0863..c52c019947 100644
--- a/gsk/gskdebug.c
+++ b/gsk/gskdebug.c
@@ -6,6 +6,7 @@ static const GDebugKey gsk_debug_keys[] = {
   { "renderer", GSK_DEBUG_RENDERER },
   { "cairo", GSK_DEBUG_CAIRO },
   { "opengl", GSK_DEBUG_OPENGL },
+  { "shaders", GSK_DEBUG_SHADERS },
 };
 #endif
 
diff --git a/gsk/gskdebugprivate.h b/gsk/gskdebugprivate.h
index 48b2f92735..a62ce2d8a2 100644
--- a/gsk/gskdebugprivate.h
+++ b/gsk/gskdebugprivate.h
@@ -9,7 +9,8 @@ typedef enum {
   GSK_DEBUG_RENDER_NODE = 1 << 0,
   GSK_DEBUG_RENDERER    = 1 << 1,
   GSK_DEBUG_CAIRO       = 1 << 2,
-  GSK_DEBUG_OPENGL      = 1 << 3
+  GSK_DEBUG_OPENGL      = 1 << 3,
+  GSK_DEBUG_SHADERS     = 1 << 4
 } GskDebugFlags;
 
 typedef enum {
diff --git a/gsk/gskshaderbuilder.c b/gsk/gskshaderbuilder.c
index 8e3729429f..c37a203349 100644
--- a/gsk/gskshaderbuilder.c
+++ b/gsk/gskshaderbuilder.c
@@ -260,11 +260,12 @@ gsk_shader_builder_compile_shader (GskShaderBuilder *builder,
   glCompileShader (shader_id);
 
 #ifdef G_ENABLE_DEBUG
-  if (GSK_DEBUG_CHECK (OPENGL))
+  if (GSK_DEBUG_CHECK (SHADERS))
     {
-      g_print ("*** Compiling %s shader ***\n"
+      g_print ("*** Compiling %s shader from '%s' + '%s' ***\n"
                "%s\n",
                shader_type == GL_VERTEX_SHADER ? "vertex" : "fragment",
+               shader_preamble, shader_source,
                source);
     }
 #endif
@@ -395,7 +396,7 @@ gsk_shader_builder_create_program (GskShaderBuilder *builder,
   g_hash_table_insert (builder->programs, GINT_TO_POINTER (program_id), program);
 
 #ifdef G_ENABLE_DEBUG
-  if (GSK_DEBUG_CHECK (OPENGL))
+  if (GSK_DEBUG_CHECK (SHADERS))
     {
       GHashTableIter iter;
       gpointer name_p, location_p;