diff --git a/source/blender/blenkernel/intern/seqmodifier.c b/source/blender/blenkernel/intern/seqmodifier.c
index a7543881dad..57b8c92de3e 100644
--- a/source/blender/blenkernel/intern/seqmodifier.c
+++ b/source/blender/blenkernel/intern/seqmodifier.c
@@ -34,6 +34,7 @@
 
 #include "BLT_translation.h"
 
+#include "DNA_mask_types.h"
 #include "DNA_sequence_types.h"
 #include "DNA_scene_types.h"
 
@@ -1044,7 +1045,7 @@ ImBuf *BKE_sequence_modifier_apply_stack(const SeqRenderData *context,
         frame_offset = seq->start;
       }
       else /*if (smd->mask_time == SEQUENCE_MASK_TIME_ABSOLUTE)*/ {
-        frame_offset = 0;
+        frame_offset = ((Mask *)smd->mask_id)->sfra;
       }
 
       ImBuf *mask = modifier_mask_get(smd, context, cfra, frame_offset, ibuf->rect_float != NULL);
diff --git a/source/blender/blenkernel/intern/sequencer.c b/source/blender/blenkernel/intern/sequencer.c
index 3e88db787ee..6f7a48ce16b 100644
--- a/source/blender/blenkernel/intern/sequencer.c
+++ b/source/blender/blenkernel/intern/sequencer.c
@@ -3340,7 +3340,7 @@ static ImBuf *seq_render_mask(const SeqRenderData *context, Mask *mask, float nr
 
     /* anim-data */
     adt = BKE_animdata_from_id(&mask->id);
-    BKE_animsys_evaluate_animdata(context->scene, &mask_temp->id, adt, nr, ADT_RECALC_ANIM, false);
+    BKE_animsys_evaluate_animdata(context->scene, &mask_temp->id, adt, mask->sfra + nr, ADT_RECALC_ANIM, false);
 
     maskbuf = MEM_mallocN(sizeof(float) * context->rectx * context->recty, __func__);