diff --git a/.gitmodules b/.gitmodules
index 4ac190d..9ea6c32 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -10,9 +10,6 @@
 [submodule "hw/super6502_fpga/src/sim/sub/verilog-6502"]
 	path = hw/super6502_fpga/src/sim/sub/verilog-6502
 	url = ../verilog-6502.git
-[submodule "hw/super6502_fpga/src/sub/sd_controller"]
-	path = hw/super6502_fpga/src/sub/sd_controller
-	url = ../sd_controller.git
 [submodule "hw/super6502_fpga/src/sim/sub/verilog-sd-emulator"]
 	path = hw/super6502_fpga/src/sim/sub/verilog-sd-emulator
 	url = ../verilog-sd-emulator.git
diff --git a/hw/super6502_fpga/src/sub/sd_controller b/hw/super6502_fpga/src/sub/sd_controller
deleted file mode 160000
index a16ffb4..0000000
--- a/hw/super6502_fpga/src/sub/sd_controller
+++ /dev/null
@@ -1 +0,0 @@
-Subproject commit a16ffb427c6ac8857fd14b6fb9fe1614399b3cbc