diff --git a/src/pillow_avif/_avif.c b/src/pillow_avif/_avif.c
index 8284154..3b2970d 100644
--- a/src/pillow_avif/_avif.c
+++ b/src/pillow_avif/_avif.c
@@ -143,6 +143,7 @@ static void
 exif_orientation_to_irot_imir(avifImage *image, int orientation) {
     const avifTransformFlags otherFlags =
         image->transformFlags & ~(AVIF_TRANSFORM_IROT | AVIF_TRANSFORM_IMIR);
+
     //
     // Mapping from Exif orientation as defined in JEITA CP-3451C section 4.6.4.A
     // Orientation to irot and imir boxes as defined in HEIF ISO/IEC 28002-12:2021
@@ -152,25 +153,41 @@ exif_orientation_to_irot_imir(avifImage *image, int orientation) {
                  // the visual left-hand side.
             image->transformFlags = otherFlags;
             image->irot.angle = 0;  // ignored
+#if AVIF_VERSION_MAJOR >= 1
             image->imir.axis = 0;   // ignored
+#else
+            image->imir.mode = 0;   // ignored
+#endif
             return;
         case 2:  // The 0th row is at the visual top of the image, and the 0th column is
                  // the visual right-hand side.
             image->transformFlags = otherFlags | AVIF_TRANSFORM_IMIR;
             image->irot.angle = 0;  // ignored
+#if AVIF_VERSION_MAJOR >= 1
             image->imir.axis = 1;
+#else
+            image->imir.mode = 1;
+#endif
             return;
         case 3:  // The 0th row is at the visual bottom of the image, and the 0th column
                  // is the visual right-hand side.
             image->transformFlags = otherFlags | AVIF_TRANSFORM_IROT;
             image->irot.angle = 2;
+#if AVIF_VERSION_MAJOR >= 1
             image->imir.axis = 0;  // ignored
+#else
+            image->imir.mode = 0;  // ignored
+#endif
             return;
         case 4:  // The 0th row is at the visual bottom of the image, and the 0th column
                  // is the visual left-hand side.
             image->transformFlags = otherFlags | AVIF_TRANSFORM_IMIR;
             image->irot.angle = 0;  // ignored
+#if AVIF_VERSION_MAJOR >= 1
             image->imir.axis = 0;
+#else
+            image->imir.mode = 0;
+#endif
             return;
         case 5:  // The 0th row is the visual left-hand side of the image, and the 0th
                  // column is the visual top.
@@ -178,13 +195,21 @@ exif_orientation_to_irot_imir(avifImage *image, int orientation) {
                 otherFlags | AVIF_TRANSFORM_IROT | AVIF_TRANSFORM_IMIR;
             image->irot.angle = 1;  // applied before imir according to MIAF spec
                                     // ISO/IEC 28002-12:2021 - section 7.3.6.7
+#if AVIF_VERSION_MAJOR >= 1
             image->imir.axis = 0;
+#else
+            image->imir.mode = 0;
+#endif
             return;
         case 6:  // The 0th row is the visual right-hand side of the image, and the 0th
                  // column is the visual top.
             image->transformFlags = otherFlags | AVIF_TRANSFORM_IROT;
             image->irot.angle = 3;
+#if AVIF_VERSION_MAJOR >= 1
             image->imir.axis = 0;  // ignored
+#else
+            image->imir.mode = 0;  // ignored
+#endif
             return;
         case 7:  // The 0th row is the visual right-hand side of the image, and the 0th
                  // column is the visual bottom.
@@ -192,13 +217,21 @@ exif_orientation_to_irot_imir(avifImage *image, int orientation) {
                 otherFlags | AVIF_TRANSFORM_IROT | AVIF_TRANSFORM_IMIR;
             image->irot.angle = 3;  // applied before imir according to MIAF spec
                                     // ISO/IEC 28002-12:2021 - section 7.3.6.7
+#if AVIF_VERSION_MAJOR >= 1
             image->imir.axis = 0;
+#else
+            image->imir.mode = 0;
+#endif
             return;
         case 8:  // The 0th row is the visual left-hand side of the image, and the 0th
                  // column is the visual bottom.
             image->transformFlags = otherFlags | AVIF_TRANSFORM_IROT;
             image->irot.angle = 1;
+#if AVIF_VERSION_MAJOR >= 1
             image->imir.axis = 0;  // ignored
+#else
+            image->imir.mode = 0;  // ignored
+#endif
             return;
         default:  // reserved
             break;
@@ -211,7 +244,11 @@ exif_orientation_to_irot_imir(avifImage *image, int orientation) {
     //   left-hand side.
     image->transformFlags = otherFlags;
     image->irot.angle = 0;  // ignored
+#if AVIF_VERSION_MAJOR >= 1
     image->imir.axis = 0;   // ignored
+#else
+    image->imir.mode = 0;   // ignored
+#endif
 }
 
 static int