diff --git a/intern/cycles/blender/blender_curves.cpp b/intern/cycles/blender/blender_curves.cpp
index e42ff5d72a6..9214882bb9b 100644
--- a/intern/cycles/blender/blender_curves.cpp
+++ b/intern/cycles/blender/blender_curves.cpp
@@ -890,7 +890,7 @@ void BlenderSync::sync_curves(Mesh *mesh,
 	}
 
 	/* obtain general settings */
-	bool use_curves = scene->curve_system_manager->use_curves;
+	const bool use_curves = scene->curve_system_manager->use_curves;
 
 	if(!(use_curves && b_ob.mode() != b_ob.mode_PARTICLE_EDIT)) {
 		if(!motion)
@@ -898,11 +898,11 @@ void BlenderSync::sync_curves(Mesh *mesh,
 		return;
 	}
 
-	int primitive = scene->curve_system_manager->primitive;
-	int triangle_method = scene->curve_system_manager->triangle_method;
-	int resolution = scene->curve_system_manager->resolution;
-	size_t vert_num = mesh->verts.size();
-	size_t tri_num = mesh->num_triangles();
+	const int primitive = scene->curve_system_manager->primitive;
+	const int triangle_method = scene->curve_system_manager->triangle_method;
+	const int resolution = scene->curve_system_manager->resolution;
+	const size_t vert_num = mesh->verts.size();
+	const size_t tri_num = mesh->num_triangles();
 	int used_res = 1;
 
 	/* extract particle hair data - should be combined with connecting to mesh later*/