diff --git a/externals/CMakeLists.txt b/externals/CMakeLists.txt
index 6a2e02bb78..e9b1307a48 100644
--- a/externals/CMakeLists.txt
+++ b/externals/CMakeLists.txt
@@ -266,7 +266,9 @@ endif()
 add_subdirectory(nx_tzdb)
 
 # PowerPC emitter
-add_subdirectory(powah)
+if (ARCHITECTURE_ppc64)
+    add_subdirectory(powah)
+endif()
 
 add_library(tz tz/tz/tz.cpp)
 target_include_directories(tz PUBLIC ./tz)