diff --git a/src/bin/gdb/bfd/Jamfile b/src/bin/gdb/bfd/Jamfile
index f23b64fbb9..db7a3ade5d 100644
--- a/src/bin/gdb/bfd/Jamfile
+++ b/src/bin/gdb/bfd/Jamfile
@@ -152,7 +152,7 @@ rule BFDCopyConfigHeaders
 	local sources = $(1:G=$(SOURCE_GRIST:E)!config) ;
 
 	local source ;
-	for source in $(1) {
+	for source in $(sources) {
 		local target = [ FGristFiles $(source) ] ;
 		File $(target) : $(source) ;
 		SEARCH on $(source) = [ FDirName $(SUBDIR) config-$(OBOS_ARCH) ] ;
diff --git a/src/bin/gdb/gdb/Jamfile b/src/bin/gdb/gdb/Jamfile
index 76777bb273..6ec1201762 100644
--- a/src/bin/gdb/gdb/Jamfile
+++ b/src/bin/gdb/gdb/Jamfile
@@ -283,7 +283,7 @@ rule GDBCopyConfigFiles
 	local sources = $(1:G=$(SOURCE_GRIST:E)!config) ;
 
 	local source ;
-	for source in $(1) {
+	for source in $(sources) {
 		local target = [ FGristFiles $(source) ] ;
 		File $(target) : $(source) ;
 		SEARCH on $(source) = [ FDirName $(SUBDIR) config-$(OBOS_ARCH) ] ;