diff --git a/cli/cppcheckexecutor.cpp b/cli/cppcheckexecutor.cpp
index 4f74bccbd5e..77b80b5c3c7 100644
--- a/cli/cppcheckexecutor.cpp
+++ b/cli/cppcheckexecutor.cpp
@@ -327,7 +327,7 @@ static bool reportUnmatchedSuppressions(const std::list<SuppressionList::Suppres
 
         std::list<::ErrorMessage::FileLocation> callStack;
         if (!s.fileName.empty()) {
-            callStack.emplace_back(s.fileName, s.lineNumber, 0);
+            callStack.emplace_back(s.fileName, s.lineNumber == -1 ? 0 : s.lineNumber, 0); // TODO: get rid of s.lineNumber == -1 hack
         }
         const std::string unmatchedSuppressionId = s.isPolyspace ? "unmatchedPolyspaceSuppression" : "unmatchedSuppression";
         errorLogger.reportErr(::ErrorMessage(std::move(callStack), "", Severity::information, "Unmatched suppression: " + s.errorId, unmatchedSuppressionId, Certainty::normal));
diff --git a/test/cli/other_test.py b/test/cli/other_test.py
index 1a80b06d929..121d0ac65cb 100644
--- a/test/cli/other_test.py
+++ b/test/cli/other_test.py
@@ -3371,11 +3371,10 @@ def test_suppress_unmatched_wildcard(tmp_path):  # #13660
     exitcode, stdout, stderr = cppcheck(args, cwd=tmp_path)
     assert exitcode == 0, stdout
     assert stdout.splitlines() == []
-    # TODO: invalid locations - see #13659
     assert stderr.splitlines() == [
-        'test*.c:-1:0: information: Unmatched suppression: id [unmatchedSuppression]',
-        'test*.c:-1:0: information: Unmatched suppression: id2 [unmatchedSuppression]',
-        'tes?.c:-1:0: information: Unmatched suppression: id2 [unmatchedSuppression]'
+        'test*.c:0:0: information: Unmatched suppression: id [unmatchedSuppression]',
+        'test*.c:0:0: information: Unmatched suppression: id2 [unmatchedSuppression]',
+        'tes?.c:0:0: information: Unmatched suppression: id2 [unmatchedSuppression]'
     ]
 
 
@@ -3400,12 +3399,11 @@ def test_suppress_unmatched_wildcard_unchecked(tmp_path):
     exitcode, stdout, stderr = cppcheck(args, cwd=tmp_path)
     assert exitcode == 0, stdout
     assert stdout.splitlines() == []
-    # TODO: invalid locations - see #13659
     assert stderr.splitlines() == [
-        'test*.c:-1:0: information: Unmatched suppression: id [unmatchedSuppression]',
-        'tes?.c:-1:0: information: Unmatched suppression: id [unmatchedSuppression]',
-        '*:-1:0: information: Unmatched suppression: id2 [unmatchedSuppression]',
-        'test*.c:-1:0: information: Unmatched suppression: * [unmatchedSuppression]'
+        'test*.c:0:0: information: Unmatched suppression: id [unmatchedSuppression]',
+        'tes?.c:0:0: information: Unmatched suppression: id [unmatchedSuppression]',
+        '*:0:0: information: Unmatched suppression: id2 [unmatchedSuppression]',
+        'test*.c:0:0: information: Unmatched suppression: * [unmatchedSuppression]'
     ]
 
 
@@ -3859,12 +3857,12 @@ def test_unmatched_file(tmp_path):  # #14248 / #14249
     ret, stdout, stderr = cppcheck(args)
     assert stdout == ''
     assert stderr.splitlines() == [
-        f'{lib_file}:-1:0: information: Unmatched suppression: error [unmatchedSuppression]',
-        f'{lib_file}:-1:0: information: Unmatched suppression: error2 [unmatchedSuppression]',
-        f'{lib_file}:-1:0: information: Unmatched suppression: error3 [unmatchedSuppression]',
-        f'{lib_file}:-1:0: information: Unmatched suppression: error4 [unmatchedSuppression]',
-        f'{lib_file}:-1:0: information: Unmatched suppression: error5 [unmatchedSuppression]',
-        f'{lib_file}:-1:0: information: Unmatched suppression: error6 [unmatchedSuppression]'
+        f'{lib_file}:0:0: information: Unmatched suppression: error [unmatchedSuppression]',
+        f'{lib_file}:0:0: information: Unmatched suppression: error2 [unmatchedSuppression]',
+        f'{lib_file}:0:0: information: Unmatched suppression: error3 [unmatchedSuppression]',
+        f'{lib_file}:0:0: information: Unmatched suppression: error4 [unmatchedSuppression]',
+        f'{lib_file}:0:0: information: Unmatched suppression: error5 [unmatchedSuppression]',
+        f'{lib_file}:0:0: information: Unmatched suppression: error6 [unmatchedSuppression]'
     ]
     assert ret == 0, stdout
 
diff --git a/test/testsuppressions.cpp b/test/testsuppressions.cpp
index e8ebc4c4702..2b87cdad42b 100644
--- a/test/testsuppressions.cpp
+++ b/test/testsuppressions.cpp
@@ -542,7 +542,7 @@ class TestSuppressions : public TestFixture {
                                         "    b++;\n"
                                         "}\n",
                                         "uninitvar:test.cpp"));
-        ASSERT_EQUALS("[test.cpp]: (information) Unmatched suppression: uninitvar [unmatchedSuppression]\n", errout_str());
+        ASSERT_EQUALS("[test.cpp:0:0]: (information) Unmatched suppression: uninitvar [unmatchedSuppression]\n", errout_str());
 
         // suppress all for this file only
         ASSERT_EQUALS(0, (this->*check)("void f() {\n"
@@ -558,7 +558,7 @@ class TestSuppressions : public TestFixture {
                                         "    b++;\n"
                                         "}\n",
                                         "*:test.cpp"));
-        ASSERT_EQUALS("[test.cpp]: (information) Unmatched suppression: * [unmatchedSuppression]\n", errout_str());
+        ASSERT_EQUALS("[test.cpp:0:0]: (information) Unmatched suppression: * [unmatchedSuppression]\n", errout_str());
 
         // suppress uninitvar for this file and line
         ASSERT_EQUALS(0, (this->*check)("void f() {\n"