diff --git a/pipi/codec/imlib.c b/pipi/codec/imlib.c
index 786fbbb..a8cc67b 100644
--- a/pipi/codec/imlib.c
+++ b/pipi/codec/imlib.c
@@ -86,6 +86,7 @@ int pipi_save_imlib2(pipi_image_t *img, const char *name)
 
         img->codec_priv = (void *)priv;
         img->codec_format = PIPI_PIXELS_RGBA_C;
+        img->codec_free = pipi_free_imlib2;
 
         img->wrap = 0;
         img->u8 = 1;
diff --git a/pipi/codec/opencv.c b/pipi/codec/opencv.c
index 0b61aa6..96cfeb9 100644
--- a/pipi/codec/opencv.c
+++ b/pipi/codec/opencv.c
@@ -86,6 +86,7 @@ int pipi_save_opencv(pipi_image_t *img, const char *name)
 
         img->codec_priv = (void *)priv;
         img->codec_format = PIPI_PIXELS_BGR_C;
+        img->codec_free = pipi_free_opencv;
 
         img->wrap = 0;
         img->u8 = 1;
diff --git a/pipi/codec/sdl.c b/pipi/codec/sdl.c
index 15c9e88..89771e0 100644
--- a/pipi/codec/sdl.c
+++ b/pipi/codec/sdl.c
@@ -90,6 +90,7 @@ int pipi_save_sdl(pipi_image_t *img, const char *name)
 
         img->codec_priv = (void *)priv;
         img->codec_format = PIPI_PIXELS_RGBA_C;
+        img->codec_free = pipi_free_sdl;
 
         img->wrap = 0;
         img->u8 = 1;