2 files changed, 10 insertions, 2 deletions
diff --git a/grid.go b/grid.go
index a298834..53c7d35 100644
--- a/grid.go
+++ b/grid.go
@@ -188,7 +188,11 @@ _=ymargin
 			if current != nil {			// connect first left to first right
 				current.neighbor = c
 			}
-			current = as[0]				// next left is first subwidget
+			if len(as) != 0 {
+				current = as[0]			// next left is first subwidget
+			} else {
+				current = nil			// spaces don't have allocation data
+			}
 			allocations = append(allocations, as...)
 			x += g.colwidths[col]
 		}
diff --git a/stack.go b/stack.go
index 4311b37..c534ff2 100644
--- a/stack.go
+++ b/stack.go
@@ -133,7 +133,11 @@ _=ymargin
 			if current != nil {			// connect first left to first right
 				current.neighbor = c
 			}
-			current = as[0]				// next left is first subwidget
+			if len(as) != 0 {
+				current = as[0]			// next left is first subwidget
+			} else {
+				current = nil			// spaces don't have allocation data
+			}
 		}
 		allocations = append(allocations, as...)
 		if s.orientation == horizontal {