diff --git a/externals/CMakeLists.txt b/externals/CMakeLists.txt
index 9605401176..8a55a296f2 100644
--- a/externals/CMakeLists.txt
+++ b/externals/CMakeLists.txt
@@ -236,7 +236,9 @@ endif()
 add_subdirectory(nx_tzdb)
 
 # PowerPC emitter
-add_subdirectory(powah)
+if (ARCHITECTURE_ppc64)
+    add_subdirectory(powah)
+endif()
 
 if (NOT TARGET LLVM::Demangle)
     add_library(demangle demangle/ItaniumDemangle.cpp)