diff --git a/lib/checkio.cpp b/lib/checkio.cpp
index 951f427d4..30553f5a7 100644
--- a/lib/checkio.cpp
+++ b/lib/checkio.cpp
@@ -105,9 +105,12 @@ void CheckIO::checkFileUsage()
         if (!var || !var->varId() || !Token::Match(var->typeStartToken(), "FILE *"))
             continue;
 
-        if (var->isLocal())
-            filepointers.insert(std::make_pair(var->varId(), Filepointer(CLOSED)));
-        else {
+        if (var->isLocal()) {
+            if (var->nameToken()->strAt(1) == "(") // initialize by calling "ctor"
+                filepointers.insert(std::make_pair(var->varId(), Filepointer(UNKNOWN)));
+            else
+                filepointers.insert(std::make_pair(var->varId(), Filepointer(CLOSED)));
+        } else {
             filepointers.insert(std::make_pair(var->varId(), Filepointer(UNKNOWN)));
             // TODO: If all fopen calls we find open the file in the same type, we can set Filepointer::mode
         }
diff --git a/test/testio.cpp b/test/testio.cpp
index cee49cfd1..cfe9856e7 100644
--- a/test/testio.cpp
+++ b/test/testio.cpp
@@ -265,6 +265,18 @@ private:
               "    fwrite(buffer, 5, 6, f);\n"
               "}");
         ASSERT_EQUALS("", errout.str());
+
+        check("void foo() {\n"
+              "    FILE* f;\n"
+              "    fwrite(buffer, 5, 6, f);\n"
+              "}");
+        ASSERT_EQUALS("[test.cpp:3]: (error) Used file that is not opened.\n", errout.str());
+
+        check("void foo() {\n"
+              "    FILE* f(stdout);\n"
+              "    fwrite(buffer, 5, 6, f);\n"
+              "}");
+        ASSERT_EQUALS("", errout.str());
     }
 
     void fileIOwithoutPositioning() {