diff -r a67367fc0a74 -r 8470042a618f src/terraform_gui.cpp
--- a/src/terraform_gui.cpp	Fri Jun 13 15:18:29 2008 +0000
+++ b/src/terraform_gui.cpp	Sat Jun 14 01:08:59 2008 +0000
@@ -135,7 +135,7 @@
 			DoCommandP(end_tile, start_tile, _ctrl_pressed, CcBuildCanal, CMD_BUILD_CANAL | CMD_MSG(STR_CANT_BUILD_CANALS));
 			break;
 		case DDSP_CREATE_RIVER:
-			DoCommandP(end_tile, start_tile, 2, CcBuildCanal, CMD_BUILD_CANAL | CMD_MSG(STR_CANT_BUILD_CANALS));
+			DoCommandP(end_tile, start_tile, 2, CcBuildCanal, CMD_BUILD_CANAL | CMD_MSG(STR_CANT_PLACE_RIVERS));
 			break;
 		default:
 			return false;