diff --git a/neo/CMakeLists.txt b/neo/CMakeLists.txt
index a34b1917..da352784 100644
--- a/neo/CMakeLists.txt
+++ b/neo/CMakeLists.txt
@@ -295,8 +295,8 @@ if(CMAKE_COMPILER_IS_GNUCC OR CMAKE_C_COMPILER_ID STREQUAL "Clang")
 		elseif(cpu STREQUAL "ppc")
 			CHECK_CXX_COMPILER_FLAG("-arch ppc" cxx_has_arch_ppc)
 			if(cxx_has_arch_ppc)
-				add_compile_options(-arch ppc)
-				set(ldflags "${ldflags} -arch ppc")
+				add_compile_options(-arch ppc -mone-byte-bool)
+				set(ldflags "${ldflags} -arch ppc -mone-byte-bool")
 			endif()
 
 			add_compile_options(-mmacosx-version-min=10.4)