diff --git a/src/libFLAC/Makefile.am b/src/libFLAC/Makefile.am
index c8c3f6b8..da6175c5 100644
--- a/src/libFLAC/Makefile.am
+++ b/src/libFLAC/Makefile.am
@@ -22,9 +22,9 @@
 
 lib_LTLIBRARIES = libFLAC.la
 if DEBUG
-CFLAGS += @CFLAGS@ -DFLAC__PRECOMPUTE_PARTITION_SUMS -DFLAC__OVERFLOW_DETECT
+CFLAGS += @CFLAGS@ -DFLAC__OVERFLOW_DETECT
 else
-CFLAGS = @CFLAGS@ -DFLAC__PRECOMPUTE_PARTITION_SUMS
+CFLAGS = @CFLAGS@
 endif
 
 if FLaC__NO_ASM
diff --git a/src/libFLAC/Makefile.lite b/src/libFLAC/Makefile.lite
index af50b4b9..2b719fe3 100644
--- a/src/libFLAC/Makefile.lite
+++ b/src/libFLAC/Makefile.lite
@@ -21,7 +21,7 @@
 #
 
 LIB_NAME  = libFLAC
-DEFINES = -DFLAC__CPU_IA32 -DFLAC__HAS_NASM -DFLAC__PRECOMPUTE_PARTITION_SUMS -DFLAC__ALIGN_MALLOC_DATA
+DEFINES = -DFLAC__CPU_IA32 -DFLAC__HAS_NASM -DFLAC__ALIGN_MALLOC_DATA
 INCLUDES  = -I./include -I../../include
 DEBUG_CFLAGS = -DFLAC__OVERFLOW_DETECT
 
diff --git a/src/libFLAC/Makefile.vc b/src/libFLAC/Makefile.vc
index c8e8d39f..b5298c58 100644
--- a/src/libFLAC/Makefile.vc
+++ b/src/libFLAC/Makefile.vc
@@ -22,10 +22,10 @@ NASM=nasmw
 
 !IFDEF DEBUG
 .c.obj:
-	$(cc) /D FLAC__CPU_IA32 /D FLAC__HAS_NASM /D FLAC__PRECOMPUTE_PARTITION_SUMS /D FLAC__OVERFLOW_DETECT /GX $(cdebug) $(cflags) /I "..\..\include" /I ".\include" -DSTRICT -YX /Od /D "_DEBUG" $<
+	$(cc) /D FLAC__CPU_IA32 /D FLAC__HAS_NASM /D FLAC__OVERFLOW_DETECT /GX $(cdebug) $(cflags) /I "..\..\include" /I ".\include" -DSTRICT -YX /Od /D "_DEBUG" $<
 !else
 .c.obj:
-	$(cc) /D FLAC__CPU_IA32 /D FLAC__HAS_NASM /D FLAC__PRECOMPUTE_PARTITION_SUMS /O2 $(crelease) $(cflags) /I "..\..\include" /I ".\include" -DSTRICT -YX -DNODEBUG $<
+	$(cc) /D FLAC__CPU_IA32 /D FLAC__HAS_NASM /O2 $(crelease) $(cflags) /I "..\..\include" /I ".\include" -DSTRICT -YX -DNODEBUG $<
 !endif
 
 C_FILES= \