diff --git a/libs/celt/kiss_fft.c b/libs/celt/_kiss_fft.c
similarity index 100%
rename from libs/celt/kiss_fft.c
rename to libs/celt/_kiss_fft.c
diff --git a/libs/celt/kiss_fftr.c b/libs/celt/_kiss_fftr.c
similarity index 100%
rename from libs/celt/kiss_fftr.c
rename to libs/celt/_kiss_fftr.c
diff --git a/linux/Makefile.am b/linux/Makefile.am
index 8501dc49..d02746e7 100755
--- a/linux/Makefile.am
+++ b/linux/Makefile.am
@@ -28,8 +28,8 @@ llcon_SOURCES = ../src/buffer.cpp \
 	../libs/celt/entenc.c \
 	../libs/celt/header.c \
 	../libs/celt/kfft_single.c \
-	../libs/celt/kiss_fft.c \
-	../libs/celt/kiss_fftr.c \
+	../libs/celt/_kiss_fft.c \
+	../libs/celt/_kiss_fftr.c \
 	../libs/celt/laplace.c \
 	../libs/celt/mdct.c \
 	../libs/celt/modes.c \
diff --git a/windows/llcon.vcproj b/windows/llcon.vcproj
index c3f23b02..7435663c 100755
--- a/windows/llcon.vcproj
+++ b/windows/llcon.vcproj
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="Windows-1252"?>
 <VisualStudioProject
 	ProjectType="Visual C++"
-	Version="8.00"
+	Version="8,00"
 	Name="llcon"
 	ProjectGUID="{DBBC16FC-BBCA-4E3B-A9F4-0EC5202A8B2E}"
 	RootNamespace="llcon"
@@ -904,6 +904,14 @@
 			<Filter
 				Name="CELT"
 				>
+				<File
+					RelativePath="..\libs\celt\_kiss_fft.c"
+					>
+				</File>
+				<File
+					RelativePath="..\libs\celt\_kiss_fftr.c"
+					>
+				</File>
 				<File
 					RelativePath="..\libs\celt\bands.c"
 					>
@@ -936,14 +944,6 @@
 					RelativePath="..\libs\celt\kfft_single.c"
 					>
 				</File>
-				<File
-					RelativePath="..\libs\celt\kiss_fft.c"
-					>
-				</File>
-				<File
-					RelativePath="..\libs\celt\kiss_fftr.c"
-					>
-				</File>
 				<File
 					RelativePath="..\libs\celt\laplace.c"
 					>