diff --git a/Sources/Testing/Support/FileHandle.swift b/Sources/Testing/Support/FileHandle.swift
index 3b8a41705..224aea1c3 100644
--- a/Sources/Testing/Support/FileHandle.swift
+++ b/Sources/Testing/Support/FileHandle.swift
@@ -420,7 +420,7 @@ extension FileHandle {
         return false
       }
       var statStruct = stat()
-      return (0 == fstat(fd, &statStruct) && swt_S_ISFIFO(statStruct.st_mode))
+      return (0 == fstat(fd, &statStruct) && swt_S_ISFIFO(mode_t(statStruct.st_mode)))
     }
 #elseif os(Windows)
     return withUnsafeWindowsHANDLE { handle in
diff --git a/Sources/Testing/Support/GetSymbol.swift b/Sources/Testing/Support/GetSymbol.swift
index d61b0b4d0..33358f070 100644
--- a/Sources/Testing/Support/GetSymbol.swift
+++ b/Sources/Testing/Support/GetSymbol.swift
@@ -31,7 +31,7 @@ typealias ImageAddress = Never
 #if SWT_TARGET_OS_APPLE
 private nonisolated(unsafe) let RTLD_DEFAULT = ImageAddress(bitPattern: -2)
 #elseif os(Android) && _pointerBitWidth(_32)
-private nonisolated(unsafe) let RTLD_DEFAULT = ImageAddress(bitPattern: 0xFFFFFFFF)
+private nonisolated(unsafe) let RTLD_DEFAULT = ImageAddress(bitPattern: UInt(0xFFFFFFFF))
 #elseif os(Linux) || os(Android)
 private nonisolated(unsafe) let RTLD_DEFAULT = ImageAddress(bitPattern: 0)
 #endif