diff --git a/samples/cpp/uninitvar.cpp b/samples/cpp/uninitvar.cpp
index 9337b85..45b79b0 100644
--- a/samples/cpp/uninitvar.cpp
+++ b/samples/cpp/uninitvar.cpp
@@ -7,4 +7,15 @@ void Demo(int b)
 	}
 	// 缺少else分支，变量a可能不会初始化
 	a++;
+}
+
+unsigned short TernaryDemo(unsigned short input)
+{
+	unsigned char flag;
+	if (input > 0)
+	{
+		flag = 1;
+	}
+	// 三目运算符的条件会读取变量flag
+	return flag ? 10 : 0;
 }
\ No newline at end of file
diff --git a/trunk/lib/checkuninitvar.cpp b/trunk/lib/checkuninitvar.cpp
index 4f42bff..b760e97 100644
--- a/trunk/lib/checkuninitvar.cpp
+++ b/trunk/lib/checkuninitvar.cpp
@@ -781,6 +781,10 @@ int CheckUninitVar::isVariableUsage(const Token *vartok, bool pointer, Alloc all
         return (var && var->typeStartToken()->isStandardType());
     }
 
+    const Token *parent = vartok->astParent();
+    if (alloc == NO_ALLOC && Token::simpleMatch(parent, "?") && parent->astOperand1() == vartok)
+        return true;
+
     if (alloc == NO_ALLOC && vartok->next() && vartok->next()->isOp() && !vartok->next()->isAssignmentOp())
         return true;