diff --git a/source/blender/blenlib/intern/radial_tiling_shared.cc b/source/blender/blenlib/intern/radial_tiling_shared.cc
index c610c20f442..bd45e7befbd 100644
--- a/source/blender/blenlib/intern/radial_tiling_shared.cc
+++ b/source/blender/blenlib/intern/radial_tiling_shared.cc
@@ -9,6 +9,7 @@
 #include "BLI_math_base.h"
 #include "BLI_math_base.hh"
 #include "BLI_math_vector.hh"
+#include "BLI_radial_tiling.hh" /* Own include (forward declare). */
 
 namespace blender {
 
diff --git a/source/blender/blenlib/intern/radial_tiling_shared.hh b/source/blender/blenlib/intern/radial_tiling_shared.hh
index 7719bc395fe..1a3d7d83013 100644
--- a/source/blender/blenlib/intern/radial_tiling_shared.hh
+++ b/source/blender/blenlib/intern/radial_tiling_shared.hh
@@ -114,7 +114,7 @@
  * The ratio z/w is expressed as z_R_w, which is an abbreviation of z_Ratio_y. */
 
 #ifdef ADAPT_TO_GEOMETRY_NODES
-ccl_device float4
+static ccl_device float4
 calculate_out_variables_full_roundness_irregular_circular(bool calculate_r_gon_parameter_field,
                                                           bool normalize_r_gon_parameter,
                                                           float r_gon_sides,
@@ -317,13 +317,14 @@ calculate_out_variables_full_roundness_irregular_circular(bool calculate_r_gon_p
 }
 #endif
 
-ccl_device float4 calculate_out_variables_irregular_circular(bool calculate_r_gon_parameter_field,
-                                                             bool calculate_max_unit_parameter,
-                                                             bool normalize_r_gon_parameter,
-                                                             float r_gon_sides,
-                                                             float r_gon_roundness,
-                                                             float2 coord,
-                                                             float l_coord)
+static ccl_device float4
+calculate_out_variables_irregular_circular(bool calculate_r_gon_parameter_field,
+                                           bool calculate_max_unit_parameter,
+                                           bool normalize_r_gon_parameter,
+                                           float r_gon_sides,
+                                           float r_gon_roundness,
+                                           float2 coord,
+                                           float l_coord)
 {
 #ifdef ADAPT_TO_SVM
   /* Silence compiler warnings. */