diff --git a/cogl/cogl-journal-private.h b/cogl/cogl-journal-private.h
index dc008f67a..a410c8ff0 100644
--- a/cogl/cogl-journal-private.h
+++ b/cogl/cogl-journal-private.h
@@ -51,7 +51,7 @@ _cogl_journal_log_quad (float         x_1,
                         int           n_layers,
                         guint32       fallback_layers,
                         GLuint        layer0_override_texture,
-                        float        *tex_coords,
+                        const float  *tex_coords,
                         unsigned int  tex_coords_len);
 
 #endif /* __COGL_JOURNAL_PRIVATE_H */
diff --git a/cogl/cogl-journal.c b/cogl/cogl-journal.c
index db406ea9c..e05068365 100644
--- a/cogl/cogl-journal.c
+++ b/cogl/cogl-journal.c
@@ -631,7 +631,7 @@ _cogl_journal_log_quad (float         x_1,
                         int           n_layers,
                         guint32       fallback_layers,
                         GLuint        layer0_override_texture,
-                        float        *tex_coords,
+                        const float  *tex_coords,
                         unsigned int  tex_coords_len)
 {
   size_t            stride;
diff --git a/cogl/cogl-primitives.c b/cogl/cogl-primitives.c
index 4a614e1c5..58fec0240 100644
--- a/cogl/cogl-primitives.c
+++ b/cogl/cogl-primitives.c
@@ -71,8 +71,8 @@ static void
 log_quad_sub_textures_cb (CoglHandle texture_handle,
                           GLuint gl_handle,
                           GLenum gl_target,
-                          float *subtexture_coords,
-                          float *virtual_coords,
+                          const float *subtexture_coords,
+                          const float *virtual_coords,
                           void *user_data)
 {
   TextureSlicedQuadState *state = user_data;
@@ -638,11 +638,11 @@ cogl_rectangle (float x_1,
 
 void
 draw_polygon_sub_texture_cb (CoglHandle tex_handle,
-                       GLuint gl_handle,
-                       GLenum gl_target,
-                       float *subtexture_coords,
-                       float *virtual_coords,
-                       void *user_data)
+                             GLuint gl_handle,
+                             GLenum gl_target,
+                             const float *subtexture_coords,
+                             const float *virtual_coords,
+                             void *user_data)
 {
   TextureSlicedPolygonState *state = user_data;
   GLfloat *v;
diff --git a/cogl/cogl-texture-private.h b/cogl/cogl-texture-private.h
index 9ea5fbfb2..ee018faf4 100644
--- a/cogl/cogl-texture-private.h
+++ b/cogl/cogl-texture-private.h
@@ -37,8 +37,8 @@ typedef struct _CoglTextureUploadData CoglTextureUploadData;
 typedef void (*CoglTextureSliceCallback) (CoglHandle handle,
                                           GLuint gl_handle,
                                           GLenum gl_target,
-                                          float *slice_coords,
-                                          float *virtual_coords,
+                                          const float *slice_coords,
+                                          const float *virtual_coords,
                                           void *user_data);
 
 typedef void (* CoglTextureManualRepeatCallback) (const float *coords,