diff --git a/Sources/CodePrinting/CodePrinter.swift b/Sources/CodePrinting/CodePrinter.swift
index 4d91c884b..1fa3db8dd 100644
--- a/Sources/CodePrinting/CodePrinter.swift
+++ b/Sources/CodePrinting/CodePrinter.swift
@@ -134,6 +134,17 @@ public struct CodePrinter: Sendable {
     try printBraceBlock("if (\(condition))", function: function, file: file, line: line, body: body)
   }
 
+  /// Print a Swift `guard <condition> else { … }` block.
+  public mutating func printGuardBlock(
+    _ condition: Any,
+    function: String = #function,
+    file: String = #fileID,
+    line: UInt = #line,
+    body: (inout CodePrinter) throws -> Void
+  ) rethrows {
+    try printBraceBlock("guard \(condition) else", function: function, file: file, line: line, body: body)
+  }
+
   public mutating func printParts(
     _ parts: String...,
     terminator: PrinterTerminator = .newLine,
diff --git a/Sources/JExtractSwiftLib/JNI/JNISwift2JavaGenerator+SwiftThunkPrinting.swift b/Sources/JExtractSwiftLib/JNI/JNISwift2JavaGenerator+SwiftThunkPrinting.swift
index 21063d3dc..71c30cb8a 100644
--- a/Sources/JExtractSwiftLib/JNI/JNISwift2JavaGenerator+SwiftThunkPrinting.swift
+++ b/Sources/JExtractSwiftLib/JNI/JNISwift2JavaGenerator+SwiftThunkPrinting.swift
@@ -602,7 +602,7 @@ extension JNISwift2JavaGenerator {
       printer.print("#if _pointerBitWidth(_32)")
 
       for check in int32OverflowChecks {
-        printer.printBraceBlock("guard \(check) else") { printer in
+        printer.printGuardBlock(check) { printer in
           printer.print("environment.throwJavaException(javaException: .integerOverflow)")
           printer.print(dummyReturn(for: nativeSignature))
         }