diff --git a/src/hb-cairo-utils.cc b/src/hb-cairo-utils.cc
index 0eb3b0562..52fb50171 100644
--- a/src/hb-cairo-utils.cc
+++ b/src/hb-cairo-utils.cc
@@ -293,7 +293,7 @@ _hb_cairo_paint_linear_gradient (hb_cairo_context_t *c,
 
   len = hb_color_line_get_color_stops (color_line, 0, nullptr, nullptr);
   if (len > PREALLOCATED_COLOR_STOPS)
-    stops = (hb_color_stop_t *) malloc (len * sizeof (hb_color_stop_t));
+    stops = (hb_color_stop_t *) hb_malloc (len * sizeof (hb_color_stop_t));
   hb_color_line_get_color_stops (color_line, 0, &len, stops);
 
   _hb_cairo_reduce_anchors (x0, y0, x1, y1, x2, y2, &xx0, &yy0, &xx1, &yy1);
@@ -322,7 +322,7 @@ _hb_cairo_paint_linear_gradient (hb_cairo_context_t *c,
   cairo_pattern_destroy (pattern);
 
   if (stops != stops_)
-    free (stops);
+    hb_free (stops);
 }
 
 void
@@ -374,7 +374,7 @@ _hb_cairo_paint_radial_gradient (hb_cairo_context_t *c,
   cairo_pattern_destroy (pattern);
 
   if (stops != stops_)
-    free (stops);
+    hb_free (stops);
 }
 
 typedef struct {
@@ -784,9 +784,9 @@ _hb_cairo_add_sweep_gradient_patches (hb_color_stop_t *stops,
 done:
 
   if (angles != angles_)
-    free (angles);
+    hb_free (angles);
   if (colors != colors_)
-    free (colors);
+    hb_free (colors);
 }
 
 void
@@ -830,7 +830,7 @@ _hb_cairo_paint_sweep_gradient (hb_cairo_context_t *c,
   cairo_pattern_destroy (pattern);
 
   if (stops != stops_)
-    free (stops);
+    hb_free (stops);
 }
 
 #endif