diff --git a/src/libFLAC/Makefile.am b/src/libFLAC/Makefile.am
index 389a96d2..1b3a8cea 100644
--- a/src/libFLAC/Makefile.am
+++ b/src/libFLAC/Makefile.am
@@ -39,8 +39,9 @@ if FLaC__SYS_DARWIN
 #@@@@@@ PPC optimizations temporarily disabled
 CPUCFLAGS = -faltivec -force_cpusubtype_ALL -DFLAC__NO_ASM
 else
+# Linux-gcc for PPC does not have -force_cpusubtype_ALL, it is Darwin-specific
 #@@@@@@ PPC optimizations temporarily disabled
-CPUCFLAGS = -maltivec -mabi=altivec -force_cpusubtype_ALL -DFLAC__NO_ASM
+CPUCFLAGS = -maltivec -mabi=altivec -DFLAC__NO_ASM
 endif
 endif