diff --git a/libredex/DexOutput.h b/libredex/DexOutput.h
index 1fe85e8377f..2eb18033f88 100644
--- a/libredex/DexOutput.h
+++ b/libredex/DexOutput.h
@@ -313,11 +313,11 @@ class DexOutput {
   enhanced_dex_stats_t m_stats;
 
   static constexpr size_t kIODILayerBits = 4;
-  static constexpr size_t kIODILayerBound = 1 << (kIODILayerBits - 1);
+  static constexpr size_t kIODILayerBound = 1ul << (kIODILayerBits - 1);
   static constexpr size_t kIODILayerShift =
       sizeof(uint32_t) * 8 - kIODILayerBits;
-  static constexpr uint32_t kIODIDataMask = (1 << kIODILayerShift) - 1;
-  static constexpr uint32_t kIODILayerMask = ((1 << kIODILayerBits) - 1)
+  static constexpr uint32_t kIODIDataMask = (1u << kIODILayerShift) - 1;
+  static constexpr uint32_t kIODILayerMask = ((1u << kIODILayerBits) - 1)
                                              << kIODILayerShift;
 
  private:
diff --git a/libresource/androidfw/ResourceTypes.h b/libresource/androidfw/ResourceTypes.h
index dbc3a2622a2..1097a65d293 100644
--- a/libresource/androidfw/ResourceTypes.h
+++ b/libresource/androidfw/ResourceTypes.h
@@ -237,7 +237,7 @@ struct Res_value
         // Where the actual value is.  This gives us 23 bits of
         // precision.  The top bit is the sign.
         COMPLEX_MANTISSA_SHIFT = 8,
-        COMPLEX_MANTISSA_MASK = 0xffffff
+        COMPLEX_MANTISSA_MASK = 0xffffffU
     };
 
     // Possible data values for TYPE_NULL.