diff --git a/com.ibm.wala.cast.js/source/com/ibm/wala/cast/js/translator/PropertyReadExpander.java b/com.ibm.wala.cast.js/source/com/ibm/wala/cast/js/translator/PropertyReadExpander.java
index 019d328ba..aa8e2b1de 100644
--- a/com.ibm.wala.cast.js/source/com/ibm/wala/cast/js/translator/PropertyReadExpander.java
+++ b/com.ibm.wala.cast.js/source/com/ibm/wala/cast/js/translator/PropertyReadExpander.java
@@ -5,7 +5,6 @@ import java.util.Map;
 import com.ibm.wala.cast.ir.translator.AstTranslator.InternalCAstSymbol;
 import com.ibm.wala.cast.tree.CAst;
 import com.ibm.wala.cast.tree.CAstNode;
-import com.ibm.wala.cast.tree.impl.CAstBasicRewriter;
 import com.ibm.wala.cast.tree.impl.CAstOperator;
 import com.ibm.wala.cast.tree.impl.CAstRewriter;
 import com.ibm.wala.cast.tree.impl.CAstRewriter.CopyKey;
diff --git a/com.ibm.wala.cast/source/java/com/ibm/wala/cast/ipa/callgraph/Util.java b/com.ibm.wala.cast/source/java/com/ibm/wala/cast/ipa/callgraph/Util.java
index 8b99338c3..41949a7b2 100644
--- a/com.ibm.wala.cast/source/java/com/ibm/wala/cast/ipa/callgraph/Util.java
+++ b/com.ibm.wala.cast/source/java/com/ibm/wala/cast/ipa/callgraph/Util.java
@@ -28,7 +28,6 @@ import com.ibm.wala.ipa.callgraph.CGNode;
 import com.ibm.wala.ipa.callgraph.CallGraph;
 import com.ibm.wala.ipa.callgraph.propagation.PointerAnalysis;
 import com.ibm.wala.ipa.callgraph.propagation.PointerKey;
-import com.ibm.wala.ipa.callgraph.propagation.PropagationCallGraphBuilder;
 import com.ibm.wala.ssa.IR;
 import com.ibm.wala.util.debug.Assertions;
 
diff --git a/com.ibm.wala.core/src/com/ibm/wala/analysis/reflection/JavaTypeContext.java b/com.ibm.wala.core/src/com/ibm/wala/analysis/reflection/JavaTypeContext.java
index d3b95b55b..4d4836c3a 100644
--- a/com.ibm.wala.core/src/com/ibm/wala/analysis/reflection/JavaTypeContext.java
+++ b/com.ibm.wala.core/src/com/ibm/wala/analysis/reflection/JavaTypeContext.java
@@ -17,7 +17,6 @@ import com.ibm.wala.ipa.callgraph.Context;
 import com.ibm.wala.ipa.callgraph.ContextItem;
 import com.ibm.wala.ipa.callgraph.ContextKey;
 import com.ibm.wala.ipa.callgraph.propagation.FilteredPointerKey;
-import com.ibm.wala.util.debug.Assertions;
 
 /**
  * Implement a Context which corresponds to a given type abstraction. Thus, this maps the name "TYPE" to a JavaTypeAbstraction.
diff --git a/com.ibm.wala.core/src/com/ibm/wala/classLoader/CompoundModule.java b/com.ibm.wala.core/src/com/ibm/wala/classLoader/CompoundModule.java
index 42318f1ed..1a238737f 100644
--- a/com.ibm.wala.core/src/com/ibm/wala/classLoader/CompoundModule.java
+++ b/com.ibm.wala.core/src/com/ibm/wala/classLoader/CompoundModule.java
@@ -16,7 +16,6 @@ import java.io.InputStreamReader;
 import java.io.LineNumberReader;
 import java.net.URL;
 import java.util.ArrayList;
-import java.util.Arrays;
 import java.util.Iterator;
 import java.util.List;
 
diff --git a/com.ibm.wala.core/src/com/ibm/wala/ipa/callgraph/propagation/ReceiverInstanceContext.java b/com.ibm.wala.core/src/com/ibm/wala/ipa/callgraph/propagation/ReceiverInstanceContext.java
index cc5f508b1..7545222f2 100644
--- a/com.ibm.wala.core/src/com/ibm/wala/ipa/callgraph/propagation/ReceiverInstanceContext.java
+++ b/com.ibm.wala.core/src/com/ibm/wala/ipa/callgraph/propagation/ReceiverInstanceContext.java
@@ -13,7 +13,6 @@ package com.ibm.wala.ipa.callgraph.propagation;
 import com.ibm.wala.ipa.callgraph.Context;
 import com.ibm.wala.ipa.callgraph.ContextItem;
 import com.ibm.wala.ipa.callgraph.ContextKey;
-import com.ibm.wala.util.debug.Assertions;
 
 /**
  * This is a context which is customized for the {@link InstanceKey} of the receiver.