diff --git a/src/main/java/com/android/tools/r8/R8Command.java b/src/main/java/com/android/tools/r8/R8Command.java
index 86ff5a5..9fcca89 100644
--- a/src/main/java/com/android/tools/r8/R8Command.java
+++ b/src/main/java/com/android/tools/r8/R8Command.java
@@ -531,7 +531,8 @@
   InternalOptions getInternalOptions() {
     InternalOptions internal = new InternalOptions(proguardConfiguration, getReporter());
     assert !internal.debug;
-    internal.debug = getMode() == CompilationMode.DEBUG;
+    internal.debug = getMode() == CompilationMode.DEBUG
+        || (forceProguardCompatibility && !proguardConfiguration.isObfuscating());
     internal.programConsumer = getProgramConsumer();
     internal.minApiLevel = getMinApiLevel();
     internal.enableDesugaring = getEnableDesugaring();