diff --git a/core/src/com/google/zxing/oned/MultiFormatOneDReader.java b/core/src/com/google/zxing/oned/MultiFormatOneDReader.java
index ee869501f..5120438ea 100644
--- a/core/src/com/google/zxing/oned/MultiFormatOneDReader.java
+++ b/core/src/com/google/zxing/oned/MultiFormatOneDReader.java
@@ -39,6 +39,7 @@ public final class MultiFormatOneDReader extends OneDReader {
   private final OneDReader[] readers;
 
   public MultiFormatOneDReader(Map<DecodeHintType,?> hints) {
+    @SuppressWarnings("unchecked")    
     Collection<BarcodeFormat> possibleFormats = hints == null ? null :
         (Collection<BarcodeFormat>) hints.get(DecodeHintType.POSSIBLE_FORMATS);
     boolean useCode39CheckDigit = hints != null &&
diff --git a/core/src/com/google/zxing/oned/MultiFormatUPCEANReader.java b/core/src/com/google/zxing/oned/MultiFormatUPCEANReader.java
index f0d29fc79..452bed59c 100644
--- a/core/src/com/google/zxing/oned/MultiFormatUPCEANReader.java
+++ b/core/src/com/google/zxing/oned/MultiFormatUPCEANReader.java
@@ -40,6 +40,7 @@ public final class MultiFormatUPCEANReader extends OneDReader {
   private final UPCEANReader[] readers;
 
   public MultiFormatUPCEANReader(Map<DecodeHintType,?> hints) {
+    @SuppressWarnings("unchecked")
     Collection<BarcodeFormat> possibleFormats = hints == null ? null :
         (Collection<BarcodeFormat>) hints.get(DecodeHintType.POSSIBLE_FORMATS);
     Collection<UPCEANReader> readers = new ArrayList<UPCEANReader>();
@@ -93,6 +94,7 @@ public final class MultiFormatUPCEANReader extends OneDReader {
       boolean ean13MayBeUPCA =
           result.getBarcodeFormat() == BarcodeFormat.EAN_13 &&
               result.getText().charAt(0) == '0';
+      @SuppressWarnings("unchecked")      
       Collection<BarcodeFormat> possibleFormats =
           hints == null ? null : (Collection<BarcodeFormat>) hints.get(DecodeHintType.POSSIBLE_FORMATS);
       boolean canReturnUPCA = possibleFormats == null || possibleFormats.contains(BarcodeFormat.UPC_A);
diff --git a/pom.xml b/pom.xml
index be45a6cde..0ab16f616 100644
--- a/pom.xml
+++ b/pom.xml
@@ -82,6 +82,9 @@
         <configuration>
           <source>1.6</source>
           <target>1.6</target>
+          <compilerArgs>
+            <arg>-Xlint:all</arg>
+          </compilerArgs>
         </configuration>
       </plugin>
       <plugin>