diff --git a/source/blender/blenlib/intern/math_geom_inline.cc b/source/blender/blenlib/intern/math_geom_inline.cc
index 9686cd42881..2add0b8fce0 100644
--- a/source/blender/blenlib/intern/math_geom_inline.cc
+++ b/source/blender/blenlib/intern/math_geom_inline.cc
@@ -129,25 +129,25 @@ MINLINE float shell_angle_to_dist(const float angle)
 }
 MINLINE float shell_v3v3_normalized_to_dist(const float a[3], const float b[3])
 {
-  const float angle_cos = fabsf(dot_v3v3(a, b));
   BLI_ASSERT_UNIT_V3(a);
   BLI_ASSERT_UNIT_V3(b);
+  const float angle_cos = fabsf(dot_v3v3(a, b));
   return (UNLIKELY(angle_cos < SMALL_NUMBER)) ? 1.0f : (1.0f / angle_cos);
 }
 MINLINE float shell_v2v2_normalized_to_dist(const float a[2], const float b[2])
 {
-  const float angle_cos = fabsf(dot_v2v2(a, b));
   BLI_ASSERT_UNIT_V2(a);
   BLI_ASSERT_UNIT_V2(b);
+  const float angle_cos = fabsf(dot_v2v2(a, b));
   return (UNLIKELY(angle_cos < SMALL_NUMBER)) ? 1.0f : (1.0f / angle_cos);
 }
 
 MINLINE float shell_v3v3_mid_normalized_to_dist(const float a[3], const float b[3])
 {
-  float angle_cos;
-  float ab[3];
   BLI_ASSERT_UNIT_V3(a);
   BLI_ASSERT_UNIT_V3(b);
+  float angle_cos;
+  float ab[3];
   add_v3_v3v3(ab, a, b);
   angle_cos = (normalize_v3(ab) != 0.0f) ? fabsf(dot_v3v3(a, ab)) : 0.0f;
   return (UNLIKELY(angle_cos < SMALL_NUMBER)) ? 1.0f : (1.0f / angle_cos);
@@ -155,10 +155,10 @@ MINLINE float shell_v3v3_mid_normalized_to_dist(const float a[3], const float b[
 
 MINLINE float shell_v2v2_mid_normalized_to_dist(const float a[2], const float b[2])
 {
-  float angle_cos;
-  float ab[2];
   BLI_ASSERT_UNIT_V2(a);
   BLI_ASSERT_UNIT_V2(b);
+  float angle_cos;
+  float ab[2];
   add_v2_v2v2(ab, a, b);
   angle_cos = (normalize_v2(ab) != 0.0f) ? fabsf(dot_v2v2(a, ab)) : 0.0f;
   return (UNLIKELY(angle_cos < SMALL_NUMBER)) ? 1.0f : (1.0f / angle_cos);