diff --git a/scripts/build/bootstrap_archives b/scripts/build/bootstrap_archives
index 6f878b97d..27a92f02f 100755
--- a/scripts/build/bootstrap_archives
+++ b/scripts/build/bootstrap_archives
@@ -190,8 +190,8 @@ do
 
 		if [ "${_PASS}" != "source" ] && [ "${LB_APT_SOURCE_ARCHIVES}" = "false" ]
 		then
-		# Strip out source archives
-			sed "/^deb-src /d" "chroot/etc/apt/sources.list.d/$(basename ${FILE} .chroot)"
+			# Strip out source archives
+			sed -i "/^deb-src /d" "chroot/etc/apt/sources.list.d/$(basename ${FILE} .chroot)"
 		fi
 	fi
 done
diff --git a/scripts/build/chroot_archives b/scripts/build/chroot_archives
index 08d5e3202..5d005b23c 100755
--- a/scripts/build/chroot_archives
+++ b/scripts/build/chroot_archives
@@ -192,8 +192,8 @@ EOF
 
 				if [ "${_PASS}" != "source" ] && [ "${LB_APT_SOURCE_ARCHIVES}" = "false" ]
 				then
-				# Strip out source archives
-					sed "/^deb-src /d" "chroot/etc/apt/sources.list.d/$(basename ${FILE} .chroot)"
+					# Strip out source archives
+					sed -i "/^deb-src /d" "chroot/etc/apt/sources.list.d/$(basename ${FILE} .chroot)"
 				fi
 			fi
 		done
@@ -616,7 +616,7 @@ EOF
 				if [ "${_PASS}" != "source" ] && [ "${LB_APT_SOURCE_ARCHIVES}" = "false" ]
 				then
 					# Strip out source archives
-					sed "/^deb-src /d" "chroot/etc/apt/sources.list.d/$(basename ${FILE} .binary)"
+					sed -i "/^deb-src /d" "chroot/etc/apt/sources.list.d/$(basename ${FILE} .binary)"
 				fi
 			fi
 		done