diff --git a/lib_com/options.h b/lib_com/options.h
index e071c4da678c7022791a2a589b437df89ff6c0c0..240c9430d0dab93ad2067a322d6bd25f6776cdb5 100755
--- a/lib_com/options.h
+++ b/lib_com/options.h
@@ -67,6 +67,7 @@
 #define BASOP_NOGLOB_DECLARE_LOCAL
 #endif
 
+#define FIX_954_OTR_REF_VEC                             /* FhG: Fix forward vector direction for OTR REF VEC mode */
 #define FIX_867_CLDFB_NRG_SCALE
 
 #define FIX_1378_ACELP_OUT_OF_BOUNDS
diff --git a/lib_rend/ivas_orient_trk_fx.c b/lib_rend/ivas_orient_trk_fx.c
index 34dd661d61e909725df830a1e913950ca86bbf6b..da2891bb7b9b23f51d11a61c7e446798cdbd9dd7 100644
--- a/lib_rend/ivas_orient_trk_fx.c
+++ b/lib_rend/ivas_orient_trk_fx.c
@@ -799,7 +799,11 @@ ivas_error ivas_orient_trk_SetReferenceVector_fx(
         case IVAS_HEAD_ORIENT_TRK_REF:
         case IVAS_HEAD_ORIENT_TRK_AVG:
         case IVAS_HEAD_ORIENT_TRK_REF_VEC:
+#ifdef FIX_954_OTR_REF_VEC
+            acousticFrontVector = VectorSubtract_fx( refPos, listenerPos );
+#else
             acousticFrontVector = VectorSubtract_fx( listenerPos, refPos );
+#endif
             BREAK;
         case IVAS_HEAD_ORIENT_TRK_REF_VEC_LEV:
             /* ignore the height difference between listener position and reference position */
@@ -826,7 +830,11 @@ ivas_error ivas_orient_trk_SetReferenceVector_fx(
             refPosLevel.q_fact = q_min;
             move16();
 
+#ifdef FIX_954_OTR_REF_VEC
+            acousticFrontVector = VectorSubtract_fx( refPosLevel, listenerPosLevel );
+#else
             acousticFrontVector = VectorSubtract_fx( listenerPosLevel, refPosLevel );
+#endif
             BREAK;
         default:
             return IVAS_ERR_WRONG_PARAMS;
@@ -843,7 +851,11 @@ ivas_error ivas_orient_trk_SetReferenceVector_fx(
         return IVAS_ERR_WRONG_PARAMS;
     }
 
+#ifdef FIX_954_OTR_REF_VEC
+    ivasForwardVector.x_fx = ONE_IN_Q31;
+#else
     ivasForwardVector.x_fx = L_negate( ONE_IN_Q31 );
+#endif
     move32();
     ivasForwardVector.y_fx = 0;
     move32();