--- a/js/src/asmjs/WasmBinaryToExperimentalText.cpp
+++ b/js/src/asmjs/WasmBinaryToExperimentalText.cpp
@@ -366,18 +366,20 @@ PrintCallIndirect(WasmPrintContext& c, A
         return false;
 
     if (!c.buffer.append(" ["))
         return false;
 
     PrintOperatorPrecedence lastPrecedence = c.currentPrecedence;
     c.currentPrecedence = ExpressionPrecedence;
 
-    if (!PrintExpr(c, *call.index()))
+    if (!PrintExpr(c, *call.index())) {
+        c.currentPrecedence = lastPrecedence;
         return false;
+    }
 
     c.currentPrecedence = lastPrecedence;
 
     if (!c.buffer.append("] "))
         return false;
     if (!PrintCallArgs(c, call.args()))
         return false;
     return true;