diff --git a/CMakeLists.txt b/CMakeLists.txt
index 4c72e31..9962d98 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -34,11 +34,11 @@ option(ENABLE_CMSISDAP         "enable cmsis DAP interface (requires hidapi)" ${
 option(ENABLE_DIRTYJTAG        "enable dirtyJtag cable (requires libUSB)"     ${ENABLE_CABLE_ALL})
 option(ENABLE_ESP_USB          "enable ESP32S3 cable (requires libUSB)"       ${ENABLE_CABLE_ALL})
 option(ENABLE_JLINK            "enable JLink cable (requires libUSB)"         ${ENABLE_CABLE_ALL})
-option(ENABLE_DFU              ${ENABLE_CABLE_ALL})
-option(ENABLE_FTDI_BASED_CABLE ${ENABLE_CABLE_ALL})
+option(ENABLE_DFU              "enable DFU support (requires libUSB)"         ${ENABLE_CABLE_ALL})
+option(ENABLE_FTDI_BASED_CABLE "enable cables based on FTDI (requires libFTDI" ${ENABLE_CABLE_ALL})
 option(ENABLE_GOWIN_GWU2X      "enable Gowin GWU2X interface"                 ${ENABLE_CABLE_ALL})
-option(ENABLE_USB_BLASTERI     ${ENABLE_CABLE_ALL})
-option(ENABLE_USB_BLASTERII    ${ENABLE_CABLE_ALL})
+option(ENABLE_USB_BLASTERI     "enable Altera USB Blaster I support"          ${ENABLE_CABLE_ALL})
+option(ENABLE_USB_BLASTERII    "enable Altera USB Blaster II support"         ${ENABLE_CABLE_ALL})
 
 set(BLASTERII_PATH           "" CACHE STRING "usbBlasterII firmware directory")
 set(ISE_PATH "/opt/Xilinx/14.7" CACHE STRING "ise root directory (default: /opt/Xilinx/14.7)")