diff --git a/src/mathed/InsetMathHull.cpp b/src/mathed/InsetMathHull.cpp
index 6347415e74..15096fb991 100644
--- a/src/mathed/InsetMathHull.cpp
+++ b/src/mathed/InsetMathHull.cpp
@@ -531,13 +531,13 @@ void InsetMathHull::numbered(row_type row, bool num)
 	if (nonum_[row] && label_[row]) {
 		delete label_[row];
 		label_[row] = 0;
-		// We need an update of the Buffer reference cache.
-		// This is achieved by updateLabels().
 		if (!buffer_) {
-			// The buffer is set at the end of readInset
-			// when parsing the inset, buffer_ is 0.
+			// The buffer is set at the end of readInset.
+			// When parsing the inset, buffer_ is 0.
 			return;
 		}
+		// We need an update of the Buffer reference cache.
+		// This is achieved by updateLabels().
 		buffer().updateLabels();
 	}
 }