diff --git a/org.eclipse.jdt.core.compiler.batch/src/org/eclipse/jdt/internal/compiler/ast/SwitchStatement.java b/org.eclipse.jdt.core.compiler.batch/src/org/eclipse/jdt/internal/compiler/ast/SwitchStatement.java
index e5dd49e14cc..7a6183feec6 100644
--- a/org.eclipse.jdt.core.compiler.batch/src/org/eclipse/jdt/internal/compiler/ast/SwitchStatement.java
+++ b/org.eclipse.jdt.core.compiler.batch/src/org/eclipse/jdt/internal/compiler/ast/SwitchStatement.java
@@ -1272,7 +1272,8 @@ public void resolve(BlockScope upperScope) {
 						patternVariables = LocalVariableBinding.merge(patternVariables, statement.bindingsWhenComplete());
 					}
 				}
-				if ((expressionType.id == TypeIds.T_boolean || expressionType.id == TypeIds.T_JavaLangBoolean)
+				if (expressionType != null
+						&& (expressionType.id == TypeIds.T_boolean || expressionType.id == TypeIds.T_JavaLangBoolean)
 						&& defaultFound && isExhaustive()) {
 					upperScope.problemReporter().caseDefaultPlusTrueAndFalse(this);
 				}