diff --git a/eclipse-ecj-defaultto1.5.patch b/eclipse-ecj-defaultto1.5.patch
new file mode 100644
index 0000000..e96a403
--- /dev/null
+++ b/eclipse-ecj-defaultto1.5.patch
@@ -0,0 +1,44 @@
+### Eclipse Workspace Patch 1.0
+#P org.eclipse.jdt.core
+Index: compiler/org/eclipse/jdt/internal/compiler/impl/CompilerOptions.java
+===================================================================
+RCS file: /cvsroot/eclipse/org.eclipse.jdt.core/compiler/org/eclipse/jdt/internal/compiler/impl/CompilerOptions.java,v
+retrieving revision 1.203
+diff -u -r1.203 CompilerOptions.java
+--- compiler/org/eclipse/jdt/internal/compiler/impl/CompilerOptions.java	14 Apr 2008 19:41:33 -0000	1.203
++++ compiler/org/eclipse/jdt/internal/compiler/impl/CompilerOptions.java	15 Dec 2008 19:50:02 -0000
+@@ -253,9 +253,9 @@
+ 	// By default only lines and source attributes are generated.
+ 	public int produceDebugAttributes = ClassFileConstants.ATTR_SOURCE | ClassFileConstants.ATTR_LINES;
+ 
+-	public long complianceLevel = ClassFileConstants.JDK1_4; // by default be compliant with 1.4
+-	public long sourceLevel = ClassFileConstants.JDK1_3; //1.3 source behavior by default
+-	public long targetJDK = ClassFileConstants.JDK1_2; // default generates for JVM1.2
++	public long complianceLevel = ClassFileConstants.JDK1_5; // by default be compliant with 1.4
++	public long sourceLevel = ClassFileConstants.JDK1_5; //1.3 source behavior by default
++	public long targetJDK = ClassFileConstants.JDK1_5; // default generates for JVM1.2
+ 
+ 	// source encoding format
+ 	public String defaultEncoding = null; // will use the platform default encoding
+@@ -757,7 +757,7 @@
+ 			} else if (DISABLED.equals(optionValue)) {
+ 				this.reportUnusedParameterIncludeDocCommentReference = false;
+ 			}
+-		}		
++		}
+ 		if ((optionValue = optionsMap.get(OPTION_ReportSpecialParameterHidingField)) != null) {
+ 			if (ENABLED.equals(optionValue)) {
+ 				this.reportSpecialParameterHidingField = true;
+@@ -944,10 +944,10 @@
+ 		}
+ 		if ((optionValue = optionsMap.get(OPTION_ReportMissingJavadocComments)) != null) {
+ 			updateSeverity(MissingJavadocComments, optionValue);
+-		}		
++		}
+ 		if ((optionValue = optionsMap.get(OPTION_ReportMissingJavadocTagDescription)) != null) {
+ 			this.reportMissingJavadocTagDescription = (String) optionValue;
+-		}		
++		}
+ 		if ((optionValue = optionsMap.get(OPTION_ReportMissingJavadocCommentsVisibility)) != null) {
+ 			if (PUBLIC.equals(optionValue)) {
+ 				this.reportMissingJavadocCommentsVisibility = ClassFileConstants.AccPublic;
diff --git a/eclipse.spec b/eclipse.spec
index 09a73ac..e6bbe9c 100644
--- a/eclipse.spec
+++ b/eclipse.spec
@@ -157,6 +157,10 @@ Patch42:        %{name}-tests-libraryXml.patch
 Patch43:		%{name}-osgi-classpath.patch
 Patch44:		%{name}-fix-javahome64.patch
 
+# Default to 1.5 source and bytecode
+# https://bugzilla.redhat.com/354721
+Patch45:		%{name}-ecj-defaultto1.5.patch
+
 BuildRoot:      %{_tmppath}/%{name}-%{version}-%{release}-root-%(%{__id_u} -n)
 BuildRequires:  ant
 BuildRequires:  jpackage-utils >= 0:1.5, make, gcc
@@ -350,6 +354,7 @@ sed -i -e "s|http://java.sun.com/j2se/1.4/docs/api|%{_datadir}/javadoc/java|" \
 
 pushd plugins/org.eclipse.jdt.core
 %patch14 -p0
+%patch45 -p0
 popd
 
 pushd plugins/org.eclipse.pde.build
@@ -1539,6 +1544,7 @@ fi
 %changelog
 * Mon Dec 15 2008 Andrew Overholt <overholt@redhat.com> 1:3.4.1-12
 - Update pdebuild and package-build patch to include -z option.
+- Make ecj default to 1.5 (rh#354721).
 
 * Fri Dec 5 2008 Andrew Overholt <overholt@redhat.com> 1:3.4.1-10
 - Remove MaxPermSize from sysproperty lists in library.xml as it was causing the