diff --git a/kernel/bootstrap.jam b/kernel/bootstrap.jam
index 65771ff36..0a63d9c85 100755
--- a/kernel/bootstrap.jam
+++ b/kernel/bootstrap.jam
@@ -119,5 +119,5 @@ if ! $(dont-build)
     build-system ?= build-system ;
 
     # Use last element in case of multiple command-line options
-    import $(build-system[-2]) ;
+    import $(build-system[-1]) ;
 }
diff --git a/v2/kernel/bootstrap.jam b/v2/kernel/bootstrap.jam
index 65771ff36..0a63d9c85 100755
--- a/v2/kernel/bootstrap.jam
+++ b/v2/kernel/bootstrap.jam
@@ -119,5 +119,5 @@ if ! $(dont-build)
     build-system ?= build-system ;
 
     # Use last element in case of multiple command-line options
-    import $(build-system[-2]) ;
+    import $(build-system[-1]) ;
 }