diff --git a/bundles/org.eclipse.swt.cocoa.macosx.aarch64/build.properties b/bundles/org.eclipse.swt.cocoa.macosx.aarch64/build.properties
index 3b26aa7b3f..895f89b420 100644
--- a/bundles/org.eclipse.swt.cocoa.macosx.aarch64/build.properties
+++ b/bundles/org.eclipse.swt.cocoa.macosx.aarch64/build.properties
@@ -12,5 +12,4 @@
 custom = true
 bin.includes = .,*.jnilib,about_files/,about.html,fragment.properties
 bin.excludes = library/
-source.. = src/
 src.includes = about.html,about_files/
diff --git a/bundles/org.eclipse.swt.cocoa.macosx.x86_64/build.properties b/bundles/org.eclipse.swt.cocoa.macosx.x86_64/build.properties
index 3b26aa7b3f..895f89b420 100644
--- a/bundles/org.eclipse.swt.cocoa.macosx.x86_64/build.properties
+++ b/bundles/org.eclipse.swt.cocoa.macosx.x86_64/build.properties
@@ -12,5 +12,4 @@
 custom = true
 bin.includes = .,*.jnilib,about_files/,about.html,fragment.properties
 bin.excludes = library/
-source.. = src/
 src.includes = about.html,about_files/
diff --git a/bundles/org.eclipse.swt.gtk.linux.aarch64/build.properties b/bundles/org.eclipse.swt.gtk.linux.aarch64/build.properties
index a53575507c..bd562056a6 100644
--- a/bundles/org.eclipse.swt.gtk.linux.aarch64/build.properties
+++ b/bundles/org.eclipse.swt.gtk.linux.aarch64/build.properties
@@ -11,5 +11,4 @@
 custom = true
 bin.includes = .,*.so,about_files/,about.html,fragment.properties
 bin.excludes = library/
-source.. = src/
 src.includes = about.html,about_files/
diff --git a/bundles/org.eclipse.swt.gtk.linux.loongarch64/build.properties b/bundles/org.eclipse.swt.gtk.linux.loongarch64/build.properties
index b93ee5cb97..526e151803 100644
--- a/bundles/org.eclipse.swt.gtk.linux.loongarch64/build.properties
+++ b/bundles/org.eclipse.swt.gtk.linux.loongarch64/build.properties
@@ -11,5 +11,4 @@
 custom = true
 bin.includes = .,*.so,about_files/,about.html,fragment.properties
 bin.excludes = library/
-source.. = src/
 src.includes = about.html,about_files/
diff --git a/bundles/org.eclipse.swt.gtk.linux.ppc64le/build.properties b/bundles/org.eclipse.swt.gtk.linux.ppc64le/build.properties
index c95ff76da1..80f88238f1 100644
--- a/bundles/org.eclipse.swt.gtk.linux.ppc64le/build.properties
+++ b/bundles/org.eclipse.swt.gtk.linux.ppc64le/build.properties
@@ -11,5 +11,4 @@
 custom = true
 bin.includes = .,*.so,about_files/,about.html,fragment.properties
 bin.excludes = library/
-source.. = src/
 src.includes = about.html,about_files/
diff --git a/bundles/org.eclipse.swt.gtk.linux.x86_64/build.properties b/bundles/org.eclipse.swt.gtk.linux.x86_64/build.properties
index 6f99aecc20..d36a14d2b5 100644
--- a/bundles/org.eclipse.swt.gtk.linux.x86_64/build.properties
+++ b/bundles/org.eclipse.swt.gtk.linux.x86_64/build.properties
@@ -12,5 +12,4 @@
 custom = true
 bin.includes = .,*.so,about_files/,about.html,fragment.properties
 bin.excludes = library/
-source.. = src/
 src.includes = about.html,about_files/
diff --git a/bundles/org.eclipse.swt.win32.win32.x86_64/build.properties b/bundles/org.eclipse.swt.win32.win32.x86_64/build.properties
index a16a971141..59fd758a21 100644
--- a/bundles/org.eclipse.swt.win32.win32.x86_64/build.properties
+++ b/bundles/org.eclipse.swt.win32.win32.x86_64/build.properties
@@ -12,5 +12,4 @@
 custom = true
 bin.includes = .,*.dll,about_files/,about.html,fragment.properties
 bin.excludes = library/
-source.. = src/
 src.includes = about.html,about_files/