diff --git a/libswscale/ppc/yuv2yuv_altivec.c b/libswscale/ppc/yuv2yuv_altivec.c
index 728e4d210c..d63feb6012 100644
--- a/libswscale/ppc/yuv2yuv_altivec.c
+++ b/libswscale/ppc/yuv2yuv_altivec.c
@@ -31,10 +31,10 @@
 
 #if HAVE_ALTIVEC
 
-static int yv12toyuy2_unscaled_altivec(SwsContext *c, const uint8_t *src[],
-                                       int srcStride[], int srcSliceY,
-                                       int srcSliceH, uint8_t *dstParam[],
-                                       int dstStride_a[])
+static int yv12toyuy2_unscaled_altivec(SwsContext *c, const uint8_t *const src[],
+                                       const int srcStride[], int srcSliceY,
+                                       int srcSliceH, uint8_t *const dstParam[],
+                                       const int dstStride_a[])
 {
     uint8_t *dst = dstParam[0] + dstStride_a[0] * srcSliceY;
     // yv12toyuy2(src[0], src[1], src[2], dst, c->srcW, srcSliceH,
@@ -107,10 +107,10 @@ static int yv12toyuy2_unscaled_altivec(SwsContext *c, const uint8_t *src[],
     return srcSliceH;
 }
 
-static int yv12touyvy_unscaled_altivec(SwsContext *c, const uint8_t *src[],
-                                       int srcStride[], int srcSliceY,
-                                       int srcSliceH, uint8_t *dstParam[],
-                                       int dstStride_a[])
+static int yv12touyvy_unscaled_altivec(SwsContext *c, const uint8_t *const src[],
+                                       const int srcStride[], int srcSliceY,
+                                       int srcSliceH, uint8_t *const dstParam[],
+                                       const int dstStride_a[])
 {
     uint8_t *dst = dstParam[0] + dstStride_a[0] * srcSliceY;
     // yv12toyuy2(src[0], src[1], src[2], dst, c->srcW, srcSliceH,