diff --git a/com.ibm.wala.cast.java.test/build.properties b/com.ibm.wala.cast.java.test/build.properties
index 6138c1ade..914472c49 100644
--- a/com.ibm.wala.cast.java.test/build.properties
+++ b/com.ibm.wala.cast.java.test/build.properties
@@ -1,5 +1,5 @@
 source.. = src/
-output.. = bin/
+output.. = bin/test
 bin.includes = META-INF/,\
                .,\
                OSGI-INF/l10n/bundle.properties,\
diff --git a/com.ibm.wala.cast.java/build.properties b/com.ibm.wala.cast.java/build.properties
index 6138c1ade..34e5e723d 100644
--- a/com.ibm.wala.cast.java/build.properties
+++ b/com.ibm.wala.cast.java/build.properties
@@ -1,5 +1,5 @@
 source.. = src/
-output.. = bin/
+output.. = bin/main
 bin.includes = META-INF/,\
                .,\
                OSGI-INF/l10n/bundle.properties,\
diff --git a/com.ibm.wala.cast.test/build.properties b/com.ibm.wala.cast.test/build.properties
index 6743cabc9..f56d93841 100644
--- a/com.ibm.wala.cast.test/build.properties
+++ b/com.ibm.wala.cast.test/build.properties
@@ -1,5 +1,5 @@
 source.. =  harness-src/java
-output.. = bin/
+output.. = bin/test
 bin.includes = META-INF/,\
                .,\
                OSGI-INF/l10n/bundle.properties,\
diff --git a/com.ibm.wala.cast/build.properties b/com.ibm.wala.cast/build.properties
index ab2f2a2a4..2df261a66 100644
--- a/com.ibm.wala.cast/build.properties
+++ b/com.ibm.wala.cast/build.properties
@@ -1,5 +1,5 @@
 source.. =  source/java/
-output.. = bin/
+output.. = bin/main
 bin.includes = META-INF/,\
                lib/commons-io-2.4.jar,\
                .,\
diff --git a/com.ibm.wala.core.testdata/build.properties b/com.ibm.wala.core.testdata/build.properties
index 0130d2b22..afa504567 100644
--- a/com.ibm.wala.core.testdata/build.properties
+++ b/com.ibm.wala.core.testdata/build.properties
@@ -1,5 +1,5 @@
 source.. = src/
-output.. = bin/
+output.. = bin/test
 bin.includes = META-INF/,\
                .,\
                hello_hash.jar,\
diff --git a/com.ibm.wala.core.tests/build.properties b/com.ibm.wala.core.tests/build.properties
index f446fcbed..84faea788 100644
--- a/com.ibm.wala.core.tests/build.properties
+++ b/com.ibm.wala.core.tests/build.properties
@@ -1,6 +1,6 @@
 source.. = src/,\
            dat/
-output.. = bin/
+output.. = bin/test
 bin.includes = META-INF/,\
                .,\
                plugin.xml,\
diff --git a/com.ibm.wala.core/build.properties b/com.ibm.wala.core/build.properties
index e9f999865..9d7379058 100644
--- a/com.ibm.wala.core/build.properties
+++ b/com.ibm.wala.core/build.properties
@@ -4,8 +4,8 @@ bin.includes = plugin.properties,\
                .,\
                lib/
 jars.compile.order = .
-output.. = bin/
 source.. = dat/,\
            src/,\
            lib/
+output.. = bin/main
 javacProjectSettings = true
diff --git a/com.ibm.wala.ide.tests/build.properties b/com.ibm.wala.ide.tests/build.properties
index d20cc39b5..94a8e7664 100644
--- a/com.ibm.wala.ide.tests/build.properties
+++ b/com.ibm.wala.ide.tests/build.properties
@@ -1,5 +1,5 @@
 source.. = src/,
-output.. = bin/
+output.. = bin/test
 bin.includes = META-INF/,\
                .,\
                plugin.xml,\
diff --git a/com.ibm.wala.ide/build.properties b/com.ibm.wala.ide/build.properties
index 06ebbff3b..bbea0a1a3 100644
--- a/com.ibm.wala.ide/build.properties
+++ b/com.ibm.wala.ide/build.properties
@@ -3,5 +3,5 @@ bin.includes = META-INF/,\
                plugin.properties
 jars.compile.order = .
 source.. = src/
-output.. = bin/
+output.. = bin/main
 javacProjectSettings = true
diff --git a/com.ibm.wala.shrike/build.properties b/com.ibm.wala.shrike/build.properties
index 06ebbff3b..bbea0a1a3 100644
--- a/com.ibm.wala.shrike/build.properties
+++ b/com.ibm.wala.shrike/build.properties
@@ -3,5 +3,5 @@ bin.includes = META-INF/,\
                plugin.properties
 jars.compile.order = .
 source.. = src/
-output.. = bin/
+output.. = bin/main
 javacProjectSettings = true
diff --git a/com.ibm.wala.util/build.properties b/com.ibm.wala.util/build.properties
index 07d0abe02..a9234bed1 100644
--- a/com.ibm.wala.util/build.properties
+++ b/com.ibm.wala.util/build.properties
@@ -4,5 +4,5 @@ bin.includes = META-INF/,\
                OSGI-INF/
 jars.compile.order = .
 source.. = src/
-output.. = bin/
+output.. = bin/main
 javacProjectSettings = true