diff --git a/groovy18-timestamp.patch b/groovy18-timestamp.patch
index 716fcba..6725045 100644
--- a/groovy18-timestamp.patch
+++ b/groovy18-timestamp.patch
@@ -18,7 +18,7 @@
public class CompiledAtASTTransformation implements ASTTransformation {
- private final static compileTime = new Date().toString()
-+ private final static compileTime = System.getenv("SOURCE_DATE_EPOCH") != null ? new new Date(1000 * Long.parseLong(sourceDateEpoch)).toString() : new Date().toString()
++ private final static compileTime = System.getenv("SOURCE_DATE_EPOCH") != null ? new new Date(1000 * Long.parseLong(System.getenv("SOURCE_DATE_EPOCH"))).toString() : new Date().toString()
public void visit(ASTNode[] astNodes, SourceUnit sourceUnit) {
@@ -29,10 +29,10 @@
-
-+
++
${title}
-
-+
++
@@ -43,10 +43,10 @@
-
-+
++
${title}
-
-+
++
@@ -57,7 +57,7 @@
-
-+
++
${title}
@@ -68,10 +68,10 @@
-
-+
++
${title}
-
-+
++