diff --git a/src/main/java/edu/hm/hafner/analysis/parser/Gcc4CompilerParser.java b/src/main/java/edu/hm/hafner/analysis/parser/Gcc4CompilerParser.java
index f0ab5f528..bbea9bcbe 100644
--- a/src/main/java/edu/hm/hafner/analysis/parser/Gcc4CompilerParser.java
+++ b/src/main/java/edu/hm/hafner/analysis/parser/Gcc4CompilerParser.java
@@ -23,7 +23,7 @@ public class Gcc4CompilerParser extends LookaheadParser {
     private static final long serialVersionUID = 5490211629355204910L;
 
     private static final String GCC_WARNING_PATTERN =
-            ANT_TASK + "(.+?):(\\d+):(?:(\\d+):)? ?([wW]arning|.*[Ee]rror): (.*)$";
+            "(?!\\[javac\\])" + ANT_TASK + "(.+?):(\\d+):(?:(\\d+):)? ?([wW]arning|.*[Ee]rror): (.*)$";
     private static final Pattern CLASS_PATTERN = Pattern.compile("\\[-W(.+)]$");
 
     /**
diff --git a/src/test/java/edu/hm/hafner/analysis/parser/Gcc4CompilerParserTest.java b/src/test/java/edu/hm/hafner/analysis/parser/Gcc4CompilerParserTest.java
index c2e69db8b..e86855295 100644
--- a/src/test/java/edu/hm/hafner/analysis/parser/Gcc4CompilerParserTest.java
+++ b/src/test/java/edu/hm/hafner/analysis/parser/Gcc4CompilerParserTest.java
@@ -619,4 +619,16 @@ void issue55221() {
                     .hasSeverity(Severity.WARNING_NORMAL);
         }
     }
+
+    /**
+     * Parses a javac warning log
+     *
+     * @see <a href="https://issues.jenkins.io/browse/JENKINS-68396">Issue 68396</a>
+     */
+    @Test
+    void issue68396() {
+        var warnings = parse("issue68396.txt");
+
+        assertThat(warnings).isEmpty();
+    }
 }
diff --git a/src/test/resources/edu/hm/hafner/analysis/parser/issue68396.txt b/src/test/resources/edu/hm/hafner/analysis/parser/issue68396.txt
new file mode 100644
index 000000000..fc4d136c8
--- /dev/null
+++ b/src/test/resources/edu/hm/hafner/analysis/parser/issue68396.txt
@@ -0,0 +1,36 @@
+[javac] import sun.misc.Signal;
+[javac]                ^
+[javac] import sun.misc.SignalHandler;
+[javac]                ^
+[javac] public class ShutdownSignalHandler implements SignalHandler {
+[javac]                                               ^
+[javac]     private SignalHandler oldHandler = null;
+[javac]             ^
+[javac] /jenkins/jenkins/workspaces/Active_Dev_Integration_20-3/134/sw/syssw/smc/java/NodeHealthCalculations/src/gov/nasa/lcs/smc/nodehealthcalculations/ShutdownSignalHandler.java:62: warning: Signal is internal proprietary API and may be removed in a future release
+[javac]             Signal sigTerm = new Signal(SIGTERM);
+[javac]             ^
+[javac] /jenkins/jenkins/workspaces/Active_Dev_Integration_20-3/134/sw/syssw/smc/java/NodeHealthCalculations/src/gov/nasa/lcs/smc/nodehealthcalculations/ShutdownSignalHandler.java:62: warning: Signal is internal proprietary API and may be removed in a future release
+[javac]             Signal sigTerm = new Signal(SIGTERM);
+[javac]                                  ^
+[javac]             termInstance.oldHandler = Signal.handle(sigTerm, termInstance);
+[javac]                                       ^
+[javac] /jenkins/jenkins/workspaces/Active_Dev_Integration_20-3/134/sw/syssw/smc/java/NodeHealthCalculations/src/gov/nasa/lcs/smc/nodehealthcalculations/ShutdownSignalHandler.java:70: warning: Signal is internal proprietary API and may be removed in a future release
+[javac]             Signal sigInt = new Signal(SIGINT);
+[javac]             ^
+[javac] /jenkins/jenkins/workspaces/Active_Dev_Integration_20-3/134/sw/syssw/smc/java/NodeHealthCalculations/src/gov/nasa/lcs/smc/nodehealthcalculations/ShutdownSignalHandler.java:70: warning: Signal is internal proprietary API and may be removed in a future release
+[javac]             Signal sigInt = new Signal(SIGINT);
+[javac]                                 ^
+[javac]             intInstance.oldHandler = Signal.handle(sigInt, intInstance);
+[javac]                                      ^
+[javac] /jenkins/jenkins/workspaces/Active_Dev_Integration_20-3/134/sw/syssw/smc/java/NodeHealthCalculations/src/gov/nasa/lcs/smc/nodehealthcalculations/ShutdownSignalHandler.java:78: warning: Signal is internal proprietary API and may be removed in a future release
+[javac]             Signal sigHup = new Signal(SIGHUP);
+[javac]             ^
+[javac] /jenkins/jenkins/workspaces/Active_Dev_Integration_20-3/134/sw/syssw/smc/java/NodeHealthCalculations/src/gov/nasa/lcs/smc/nodehealthcalculations/ShutdownSignalHandler.java:78: warning: Signal is internal proprietary API and may be removed in a future release
+[javac]             Signal sigHup = new Signal(SIGHUP);
+[javac]                                 ^
+[javac]             hupInstance.oldHandler = Signal.handle(sigHup, hupInstance);
+[javac]                                      ^
+[javac] /jenkins/jenkins/workspaces/Active_Dev_Integration_20-3/134/sw/syssw/smc/java/NodeHealthCalculations/src/gov/nasa/lcs/smc/nodehealthcalculations/ShutdownSignalHandler.java:88: warning: Signal is internal proprietary API and may be removed in a future release
+[javac]     public void handle(Signal signal) {
+[javac]                        ^
+[javac] /jenkins/jenkins/workspaces/Active_Dev_Integration_20-3/134/sw/syssw/smc/java/NodeHealthCalculations/src/gov/nasa/lcs/smc/nodehealthcalculations/ShutdownSignalHandler.java:100: warning: SignalHandler is internal proprietary API and may be removed in a future release
\ No newline at end of file