diff --git a/apps/variable_box_controller.cpp b/apps/variable_box_controller.cpp
index 8b12bd092..2d812725c 100644
--- a/apps/variable_box_controller.cpp
+++ b/apps/variable_box_controller.cpp
@@ -62,8 +62,11 @@ void VariableBoxController::willDisplayCellForIndex(HighlightCell * cell, int in
   }
   ExpressionTableCellWithExpression * myCell = (ExpressionTableCellWithExpression *)cell;
   Storage::Record record = recordAtIndex(index);
-  char truncatedName[SymbolAbstract::k_maxNameSize];
+  char truncatedName[SymbolAbstract::k_maxNameSize+k_functionArgLength];
   size_t nameLength = SymbolAbstract::TruncateExtension(truncatedName, record.fullName(), SymbolAbstract::k_maxNameSize);
+  if (m_currentPage == Page::Function) {
+    nameLength += strlcpy(truncatedName+nameLength, k_functionArg, k_functionArgLength+1);
+  }
   Layout symbolLayout = LayoutHelper::String(truncatedName, nameLength);
   myCell->setLayout(symbolLayout);
   myCell->setAccessoryLayout(expressionLayoutForRecord(record));
diff --git a/apps/variable_box_controller.h b/apps/variable_box_controller.h
index 790360fbb..266d42595 100644
--- a/apps/variable_box_controller.h
+++ b/apps/variable_box_controller.h
@@ -30,7 +30,9 @@ private:
     RootMenu,
     Expression,
     Function
-    };
+  };
+  constexpr static int k_functionArgLength = 3;
+  constexpr static const char * k_functionArg = "(x)";
   constexpr static int k_maxNumberOfDisplayedRows = 6; //240/Metric::ToolboxRowHeight
   constexpr static int k_numberOfMenuRows = 2;
   constexpr static KDCoordinate k_leafMargin = 20;