diff --git a/CMakeLists.txt b/CMakeLists.txt
index e8f67e2..29de601 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -22,7 +22,7 @@
 option(CAPSTONE_XCORE_SUPPORT "XCore support" ON)
 option(CAPSTONE_X86_SUPPORT "x86 support" ON)
 option(CAPSTONE_X86_REDUCE "x86 with reduce instruction sets to minimize library" OFF)
-option(CAPSTONE_X86_ATT_DISABLE, "Disable x86 AT&T syntax" OFF)
+option(CAPSTONE_X86_ATT_DISABLE "Disable x86 AT&T syntax" OFF)
 
 if (CAPSTONE_BUILD_DIET)
     add_definitions(-DCAPSTONE_DIET)