diff --git a/src/cpu/CMakeLists.txt b/src/cpu/CMakeLists.txt
index dd91a5ec1..ab27b77c0 100644
--- a/src/cpu/CMakeLists.txt
+++ b/src/cpu/CMakeLists.txt
@@ -24,10 +24,6 @@ if(CYRIX_6X86)
 	target_compile_definitions(cpu PRIVATE USE_CYRIX_6X86)
 endif()
 
-if(M6117)
-	target_compile_definitions(cpu PRIVATE USE_M6117)
-endif()
-
 if(DYNAREC)
 	add_library(cgt OBJECT codegen_timing_486.c codegen_timing_686.c
 		codegen_timing_common.c codegen_timing_k6.c
diff --git a/src/machine/CMakeLists.txt b/src/machine/CMakeLists.txt
index 54c3c3646..6643566ee 100644
--- a/src/machine/CMakeLists.txt
+++ b/src/machine/CMakeLists.txt
@@ -47,8 +47,4 @@ endif()
 
 if(M154X)
 	target_compile_definitions(mch PRIVATE USE_M154X)
-endif()
-
-if(M6117)
-	target_compile_definitions(mch PRIVATE USE_M6117)
 endif()
\ No newline at end of file