diff --git a/src/libFLAC/Makefile.am b/src/libFLAC/Makefile.am
index 28575008..bce6a9a7 100644
--- a/src/libFLAC/Makefile.am
+++ b/src/libFLAC/Makefile.am
@@ -29,8 +29,6 @@
 #  SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 lib_LTLIBRARIES = libFLAC.la
-DEBUGCFLAGS = 
-CPUCFLAGS = 
 if DEBUG
 DEBUGCFLAGS = -DFLAC__OVERFLOW_DETECT
 endif
@@ -38,9 +36,9 @@ if FLaC__CPU_PPC
 # The -force_cpusubtype_ALL is needed to insert a ppc64 instruction
 # into cpu.c with an asm().
 if FLaC__SYS_DARWIN
-CPUCFLAGS= -faltivec -force_cpusubtype_ALL
+CPUCFLAGS = -faltivec -force_cpusubtype_ALL
 else
-CPUCFLAGS= -maltivec -mabi=altivec -force_cpusubtype_ALL
+CPUCFLAGS = -maltivec -mabi=altivec -force_cpusubtype_ALL
 endif
 endif
 CFLAGS = @CFLAGS@ $(DEBUGCFLAGS) $(CPUCFLAGS)