diff --git a/src/backend/backend.h b/src/backend/backend.h
index b08dafb..1a8dac9 100644
--- a/src/backend/backend.h
+++ b/src/backend/backend.h
@@ -56,16 +56,16 @@ enum blur_method {
 	BLUR_METHOD_INVALID,
 };
 
-struct gaussian_kernel_args {
+struct gaussian_blur_args {
 	int size;
 	double deviation;
 };
 
-struct box_kernel_args {
+struct box_blur_args {
 	int size;
 };
 
-struct kernel_args {
+struct kernel_blur_args {
 	struct conv **kernels;
 	int kernel_count;
 };
@@ -226,4 +226,3 @@ extern struct backend_operations *backend_list[];
 void paint_all_new(session_t *ps, struct managed_win *const t, bool ignore_damage)
     attr_nonnull(1);
 
-// vim: set noet sw=8 ts=8 :
diff --git a/src/backend/backend_common.c b/src/backend/backend_common.c
index dbcccda..9561c9a 100644
--- a/src/backend/backend_common.c
+++ b/src/backend/backend_common.c
@@ -281,7 +281,7 @@ default_backend_render_shadow(backend_t *backend_data, int width, int height,
 }
 
 static struct conv **
-generate_box_blur_kernel(struct box_kernel_args *args, int *kernel_count) {
+generate_box_blur_kernel(struct box_blur_args *args, int *kernel_count) {
 	int r = args->size * 2 + 1;
 	assert(r > 0);
 	auto ret = ccalloc(2, struct conv *);
@@ -300,7 +300,7 @@ generate_box_blur_kernel(struct box_kernel_args *args, int *kernel_count) {
 }
 
 static struct conv **
-generate_gaussian_blur_kernel(struct gaussian_kernel_args *args, int *kernel_count) {
+generate_gaussian_blur_kernel(struct gaussian_blur_args *args, int *kernel_count) {
 	int r = args->size * 2 + 1;
 	assert(r > 0);
 	auto ret = ccalloc(2, struct conv *);