diff --git a/src/video/SDL_blit_A.c b/src/video/SDL_blit_A.c
index cff011e81..71109a27a 100644
--- a/src/video/SDL_blit_A.c
+++ b/src/video/SDL_blit_A.c
@@ -637,6 +637,9 @@ static void BlitRGBtoRGBPixelAlphaMMX(SDL_BlitInfo *info)
 #endif /* GCC_ASMBLIT, MSVC_ASMBLIT */
 
 #if SDL_ALTIVEC_BLITTERS
+#if __MWERKS__
+#pragma altivec_model on
+#endif
 #if HAVE_ALTIVEC_H
 #include <altivec.h>
 #endif
@@ -1406,6 +1409,9 @@ static void BlitRGBtoRGBSurfaceAlphaAltivec(SDL_BlitInfo *info)
         dstp += dstskip;
     }
 }
+#if __MWERKS__
+#pragma altivec_model off
+#endif
 #endif /* SDL_ALTIVEC_BLITTERS */
 
 /* fast RGB888->(A)RGB888 blending with surface alpha=128 special case */
diff --git a/src/video/SDL_blit_N.c b/src/video/SDL_blit_N.c
index 1ab31c63d..91d66ee6d 100644
--- a/src/video/SDL_blit_N.c
+++ b/src/video/SDL_blit_N.c
@@ -29,6 +29,9 @@
 /* Functions to blit from N-bit surfaces to other surfaces */
 
 #if SDL_ALTIVEC_BLITTERS
+#if __MWERKS__
+#pragma altivec_model on
+#endif
 #ifdef HAVE_ALTIVEC_H
 #include <altivec.h>
 #endif
@@ -830,6 +833,9 @@ static Uint32 GetBlitFeatures( void )
     }
     return features;
 }
+#if __MWERKS__
+#pragma altivec_model off
+#endif
 #else
 /* Feature 1 is has-MMX */
 #define GetBlitFeatures() ((Uint32)(SDL_HasMMX() ? 1 : 0))