diff --git a/source/blender/src/sequence.c b/source/blender/src/sequence.c
index 5be11a724f1..219768b2776 100644
--- a/source/blender/src/sequence.c
+++ b/source/blender/src/sequence.c
@@ -803,13 +803,19 @@ static void do_effect(int cfra, Sequence *seq, TStripElem * se)
 	if (!se2->ibuf->rect_float && se->ibuf->rect_float) {
 		IMB_float_from_rect(se2->ibuf);
 	}
-
+	if (!se3->ibuf->rect_float && se->ibuf->rect_float) {
+		IMB_float_from_rect(se3->ibuf);
+	}
+	
 	if (!se1->ibuf->rect && !se->ibuf->rect_float) {
 		IMB_rect_from_float(se1->ibuf);
 	}
 	if (!se2->ibuf->rect && !se->ibuf->rect_float) {
 		IMB_rect_from_float(se2->ibuf);
 	}
+	if (!se3->ibuf->rect && !se->ibuf->rect_float) {
+		IMB_rect_from_float(se3->ibuf);
+	}
 
 	sh.execute(seq, cfra, fac, facf, x, y, se1->ibuf, se2->ibuf, se3->ibuf,
 		   se->ibuf);
@@ -1731,9 +1737,10 @@ static void do_build_seq_ibuf(Sequence * seq, TStripElem *se, int cfra,
 		}
 
 		if(se->ibuf == 0) {
-			/* if one of two first inputs are rectfloat, output is float too */
+			/* if any inputs are rectfloat, output is float too */
 			if((se->se1 && se->se1->ibuf && se->se1->ibuf->rect_float) ||
-			   (se->se2 && se->se2->ibuf && se->se2->ibuf->rect_float))
+			   (se->se2 && se->se2->ibuf && se->se2->ibuf->rect_float) ||
+			   (se->se3 && se->se3->ibuf && se->se3->ibuf->rect_float))
 				se->ibuf= IMB_allocImBuf((short)seqrectx, (short)seqrecty, 32, IB_rectfloat, 0);
 			else
 				se->ibuf= IMB_allocImBuf((short)seqrectx, (short)seqrecty, 32, IB_rect, 0);