diff --git a/airport_gui.c b/airport_gui.c
index d0194c5292..b38e190574 100644
--- a/airport_gui.c
+++ b/airport_gui.c
@@ -126,6 +126,7 @@ static const WindowDesc _air_toolbar_desc = {
 
 void ShowBuildAirToolbar()
 {
+	if (_current_player == OWNER_SPECTATOR) return;
 	DeleteWindowById(WC_BUILD_TOOLBAR, 0);
 	AllocateWindowDescFront(&_air_toolbar_desc, 0);
 }
diff --git a/dock_gui.c b/dock_gui.c
index f7fd23af4a..d845476359 100644
--- a/dock_gui.c
+++ b/dock_gui.c
@@ -204,6 +204,7 @@ static const WindowDesc _build_docks_toolbar_desc = {
 
 void ShowBuildDocksToolbar()
 {
+	if (_current_player == OWNER_SPECTATOR) return;
 	DeleteWindowById(WC_BUILD_TOOLBAR, 0);
 	AllocateWindowDesc(&_build_docks_toolbar_desc);
 }
diff --git a/rail_gui.c b/rail_gui.c
index 7958f9f82d..34900d6045 100644
--- a/rail_gui.c
+++ b/rail_gui.c
@@ -803,6 +803,8 @@ void ShowBuildRailToolbar(int index, int button)
 {
 	Window *w;
 
+	if (_current_player == OWNER_SPECTATOR) return;
+
 	// don't recreate the window if we're clicking on a button and the window exists.
 	if (button < 0 || !(w = FindWindowById(WC_BUILD_TOOLBAR, 0)) || w->wndproc != BuildRailToolbWndProc) {
 		DeleteWindowById(WC_BUILD_TOOLBAR, 0);
diff --git a/road_gui.c b/road_gui.c
index c87b692a23..263acb1685 100644
--- a/road_gui.c
+++ b/road_gui.c
@@ -304,6 +304,7 @@ static const WindowDesc _build_road_desc = {
 
 void ShowBuildRoadToolbar()
 {
+	if (_current_player == OWNER_SPECTATOR) return;
 	DeleteWindowById(WC_BUILD_TOOLBAR, 0);
 	AllocateWindowDesc(&_build_road_desc);
 }
diff --git a/terraform_gui.c b/terraform_gui.c
index 661815779c..90773869ee 100644
--- a/terraform_gui.c
+++ b/terraform_gui.c
@@ -211,5 +211,6 @@ static const WindowDesc _terraform_desc = {
 
 void ShowTerraformToolbar()
 {
+	if (_current_player == OWNER_SPECTATOR) return;
 	AllocateWindowDescFront(&_terraform_desc, 0);
 }