diff --git a/CMakeLists.txt b/CMakeLists.txt
index c6c550a..bfaf1e1 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -5,7 +5,7 @@ add_application(ssheven CREATOR "SSH7" ssheven.c ssheven-console.c ssheven.r)
 IF(CMAKE_SYSTEM_NAME MATCHES Retro68)
 # for 68k
 # add "-mcpu=68020" once we figure out retro68 bug
-set_target_properties(ssheven PROPERTIES COMPILE_FLAGS "-ffunction-sections -O3 -Wall -Wextra -Wno-unused-parameter")
+set_target_properties(ssheven PROPERTIES COMPILE_FLAGS "-ffunction-sections -mcpu=68020 -O3 -Wall -Wextra -Wno-unused-parameter")
 set_target_properties(ssheven PROPERTIES LINK_FLAGS "-Wl,-gc-sections -Wl,--mac-segments -Wl,${CMAKE_CURRENT_SOURCE_DIR}/ssheven.segmap")
 target_link_libraries(ssheven ssh2 mbedtls mbedx509 mbedcrypto OpenTransportApp OpenTransport OpenTptInet vterm retrocrt)
 ELSE()