diff --git a/lib/checkio.cpp b/lib/checkio.cpp
index 63d9477f8..c51038a65 100644
--- a/lib/checkio.cpp
+++ b/lib/checkio.cpp
@@ -251,7 +251,7 @@ void CheckIO::checkFileUsage()
                 while (Token::Match(fileTok, "%name% ."))
                     fileTok = fileTok->tokAt(2);
 
-                if (!fileTok || !fileTok->varId())
+                if (!fileTok || !fileTok->varId() || fileTok->strAt(1) == "[")
                     continue;
 
                 if (filepointers.find(fileTok->varId()) == filepointers.end()) { // function call indicates: Its a File
diff --git a/test/testio.cpp b/test/testio.cpp
index 33b700a32..40069bb7e 100644
--- a/test/testio.cpp
+++ b/test/testio.cpp
@@ -495,6 +495,16 @@ private:
               "    while (fclose(a)) {}\n"
               "}");
         ASSERT_EQUALS("[test.cpp:3]: (error) Used file that is not opened.\n", errout.str());
+
+        // #6823
+        check("void foo() {\n"
+              "    FILE f[2];\n"
+              "    f[0] = fopen(\"1\", \"w\");\n"
+              "    f[1] = fopen(\"2\", \"w\");\n"
+              "    fclose(f[0]);\n"
+              "    fclose(f[1]);\n"
+              "}");
+        ASSERT_EQUALS("", errout.str());
     }
 
     void fileIOwithoutPositioning() {