diff --git a/build/cmake/functions.cmake b/build/cmake/functions.cmake
index 06116384c7..f82ff941bb 100644
--- a/build/cmake/functions.cmake
+++ b/build/cmake/functions.cmake
@@ -383,7 +383,7 @@ endmacro()
 # Enable cotire for target, use optional second argument for prec. header
 macro(wx_target_enable_precomp target_name)
     target_compile_definitions(${target_name} PRIVATE WX_PRECOMP)
-    if(NOT ${ARGV1} STREQUAL "")
+    if(${ARGC} GREATER 1 AND NOT ${ARGV1} STREQUAL "")
         set_target_properties(${target_name} PROPERTIES
             COTIRE_CXX_PREFIX_HEADER_INIT ${ARGV1})
     endif()