diff --git a/CMakeLists.txt b/CMakeLists.txt
index fbe8e36e..74b1f6f7 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -121,20 +121,22 @@ include (${CMAKE_MODULE_PATH}/osdetection.cmake)
 
 if(SIMDE_BACKEND)
     include (${CMAKE_MODULE_PATH}/simde.cmake)
-    set(ARCH_FLAG march)
 elseif (ARCH_IA32 OR ARCH_X86_64)
     include (${CMAKE_MODULE_PATH}/cflags-x86.cmake)
-    set(ARCH_FLAG march)
 elseif (ARCH_ARM32 OR ARCH_AARCH64)
     include (${CMAKE_MODULE_PATH}/cflags-arm.cmake)
-    set(ARCH_FLAG march)
 elseif (ARCH_PPC64EL)
     include (${CMAKE_MODULE_PATH}/cflags-ppc64le.cmake)
-    set(ARCH_FLAG mcpu)
-else()
+else ()
     message(FATAL_ERROR "Unsupported platform")
 endif ()
 
+if (ARCH_PPC64EL)
+    set(ARCH_FLAG mcpu)
+else ()
+    set(ARCH_FLAG march)
+endif ()
+
 # Detect Native arch flags if requested
 include (${CMAKE_MODULE_PATH}/archdetect.cmake)