diff --git a/lib_com/ivas_error.h b/lib_com/ivas_error.h
index cc3e4cd12ac3bf89137aaee13adf383222781622..815248aecb03503379ce7d2f43846c5e314278e7 100644
--- a/lib_com/ivas_error.h
+++ b/lib_com/ivas_error.h
@@ -125,6 +125,9 @@ typedef enum
     IVAS_ERR_BITSTREAM_READER_INVALID_FORMAT,
     IVAS_ERR_NO_FILE_OPEN,
     IVAS_ERR_SAMPLING_RATE_UNKNOWN,
+#ifdef FIX_1370_EXTERNAL_ORIENTATION_CHECK
+    IVAS_ERR_EXTERNAL_ORIENTATION_INVALID_FORMAT,
+#endif
 
     /*----------------------------------------*
      *    renderer (lib_rend only)            *
@@ -256,6 +259,10 @@ static inline const char *ivas_error_to_string( ivas_error error_code )
             return "Invalid input format";
         case IVAS_ERR_INVALID_INDEX:
             return "Invalid index";
+#ifdef FIX_1370_EXTERNAL_ORIENTATION_CHECK
+        case IVAS_ERR_EXTERNAL_ORIENTATION_INVALID_FORMAT:
+            return "Euler angles were detected in the input but only Quaternions are supported";
+#endif
         default:
             break;
     }
diff --git a/lib_com/options.h b/lib_com/options.h
index f5d236ae7d9d6be6b60560d1ae65834e72039802..2b7ac8b58c6f0a409727b6e4f60c000dc6d3e50d 100644
--- a/lib_com/options.h
+++ b/lib_com/options.h
@@ -103,6 +103,7 @@
 #define NONBE_FIX_1261_MASA_EXT_META_JBM                /* Nokia: issue #1261: MASA metadata EXT output delay buffer init in JBM */
 #define NONBE_FIX_1143_MASA_BRSW                        /* Nok: Fix for issue 1143: MSAN use of uninitialized value in masa decoding to binaural with dtx bitrate switching and 5 % FER */
 #define NONBE_FIX_1220_OMASA_JBM_EXT_USAN               /* Nokia: fix issue 1220 OMASA EXT JBM USAN, also fix similar cases of free to avoid future problems */
+#define FIX_1370_EXTERNAL_ORIENTATION_CHECK             /* Nokia: add sanity check for Euler angles for external orientations */
 
 /* #################### End BASOP porting switches ############################ */
 
diff --git a/lib_util/rotation_file_reader.c b/lib_util/rotation_file_reader.c
index 3cd2e798b4ee2f01df24aae37293703a7a327891..3d07ec3e94a96feb6b33d159debb429bdf97bc2b 100644
--- a/lib_util/rotation_file_reader.c
+++ b/lib_util/rotation_file_reader.c
@@ -193,6 +193,14 @@ ivas_error ExternalOrientationFileReading(
     }
 
     ( externalOrientationReader->frameCounter )++;
+#ifdef FIX_1370_EXTERNAL_ORIENTATION_CHECK
+
+    /* Only Quaternion orientations are supported, raise an error if Euler angles are detected in the input */
+    if ( w == -3.0f )
+    {
+        return IVAS_ERR_EXTERNAL_ORIENTATION_INVALID_FORMAT;
+    }
+#endif
 
     pQuaternion->w_fx = float_to_fix( w, Q29 );
     pQuaternion->x_fx = float_to_fix( x, Q29 );