diff --git a/render/color.c b/render/color.c
index a033619b5..bbc07dc9f 100644
--- a/render/color.c
+++ b/render/color.c
@@ -30,7 +30,7 @@ void wlr_color_transform_init(struct wlr_color_transform *tr, enum wlr_color_tra
 }
 
 struct wlr_color_transform *wlr_color_transform_init_srgb(void) {
-	struct wlr_color_transform *tx = calloc(1, sizeof(struct wlr_color_transform));
+	struct wlr_color_transform *tx = calloc(1, sizeof(*tx));
 	if (!tx) {
 		return NULL;
 	}
diff --git a/render/color_lcms2.c b/render/color_lcms2.c
index e6a2673e1..88df46087 100644
--- a/render/color_lcms2.c
+++ b/render/color_lcms2.c
@@ -95,7 +95,7 @@ struct wlr_color_transform *wlr_color_transform_init_linear_to_icc(
 		}
 	}
 
-	tx = calloc(1, sizeof(struct wlr_color_transform_lut3d));
+	tx = calloc(1, sizeof(*tx));
 	if (!tx) {
 		goto out_lcms_tr;
 	}