diff --git a/.gitmodules b/.gitmodules
index 8cde8da..a4ac710 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -1,6 +1,3 @@
-[submodule "external/SFML"]
-	path = external/SFML
-	url = https://github.com/SFML/SFML
 [submodule "gameBase2"]
 	path = external/gameBase
 	url = https://github.com/devZoGok/gameBase
diff --git a/README.md b/README.md
index 21cdadc..c7e74fa 100644
--- a/README.md
+++ b/README.md
@@ -14,7 +14,7 @@
 - `git clone <battleship_url>`
 - `cd Battteship`
 - `git submodule update --init --recursive`
-- `cmake -S . -B <build_dir> -G <present_visual_studio_version>`
+- `cmake -S . -B <build_dir> [-G <present_visual_studio_version>] -DSFML_BUILD_GRAPHICS=0`
 - open `build\ALL_BUILD.vcxproj`
 - build the solution (in case of the fatal error C1128, use, for example, the `RelWithDebInfo` build configuration)
 - copy and paste `battleship.exe` into `<build_dir>`
diff --git a/external/SFML b/external/SFML
deleted file mode 160000
index dd14d7c..0000000
--- a/external/SFML
+++ /dev/null
@@ -1 +0,0 @@
-Subproject commit dd14d7c57fa4df91c90a744753b5135b8db0cd5a
diff --git a/external/gameBase b/external/gameBase
index 251889d..0002879 160000
--- a/external/gameBase
+++ b/external/gameBase
@@ -1 +1 @@
-Subproject commit 251889df682fe233b8b0baff97f2b7b1652bb0c4
+Subproject commit 0002879d41eaa41e6f0a773e9d08f9fa96e057d4