diff --git a/src/conio/scale.c b/src/conio/scale.c
index 1c550ca81f207966cd5b61d665088efee81e4e9a..fcd02c8488f282fe062439fd62a6eb9a018095e5 100644
--- a/src/conio/scale.c
+++ b/src/conio/scale.c
@@ -755,7 +755,7 @@ struct YCoCg_data {
 };
 
 static void
-RGB_to_YCoCg(const uint32_t RGB, struct YCoCg_data *restrict YCoCg)
+RGB_to_YCoCg(const uint32_t RGB, struct YCoCg_data *YCoCg)
 {
 	signed R, G, B, tmp;
 
@@ -770,7 +770,7 @@ RGB_to_YCoCg(const uint32_t RGB, struct YCoCg_data *restrict YCoCg)
 }
 
 static uint32_t
-YCoCg_to_RGB(struct YCoCg_data *restrict YCoCg)
+YCoCg_to_RGB(struct YCoCg_data *YCoCg)
 {
 	signed Ri, Gi, Bi, tmp;
 	unsigned R, G, B;
@@ -810,7 +810,7 @@ blend_YCoCg(const uint32_t c1, const uint32_t c2, const uint16_t weight)
  * pixels.
  */
 static void
-interpolate_width(uint32_t*restrict src, uint32_t* dst, int width, int height, int newwidth)
+interpolate_width(uint32_t* src, uint32_t* dst, int width, int height, int newwidth)
 {
 	int x, y;
 	const double mult = (double)width / newwidth;
@@ -852,7 +852,7 @@ interpolate_width(uint32_t*restrict src, uint32_t* dst, int width, int height, i
  * pixels.
  */
 static void
-interpolate_height(uint32_t*restrict src, uint32_t*restrict dst, int width, int height, int newheight)
+interpolate_height(uint32_t* src, uint32_t* dst, int width, int height, int newheight)
 {
 	int x, y;
 	const double mult = (double)height / newheight;
@@ -925,7 +925,7 @@ fail:
 }
 
 static void
-multiply_scale(uint32_t* src, uint32_t*restrict dst, int width, int height, int xmult, int ymult)
+multiply_scale(uint32_t* src, uint32_t* dst, int width, int height, int xmult, int ymult)
 {
 	int x, y;
 	int mx, my;