diff --git a/Makefile.nmake b/Makefile.nmake
index 66a40c7..4888c0e 100644
--- a/Makefile.nmake
+++ b/Makefile.nmake
@@ -130,7 +130,6 @@ objs =  \
 	bin\igzip_update_histogram_01.obj \
 	bin\igzip_update_histogram_04.obj \
 	bin\rfc1951_lookup.obj \
-	bin\detect_repeated_char.obj \
 	bin\crc32_gzip_refl_by8.obj \
 	bin\adler32_sse.obj \
 	bin\adler32_avx2_4.obj \
diff --git a/igzip/Makefile.am b/igzip/Makefile.am
index 91115b9..9c69704 100644
--- a/igzip/Makefile.am
+++ b/igzip/Makefile.am
@@ -46,7 +46,7 @@ lsrc_x86_64 +=	igzip/igzip_body_01.asm \
 		igzip/igzip_icf_body_h1_gr_bt.asm \
 		igzip/igzip_icf_finish.asm \
 		igzip/rfc1951_lookup.asm \
-		igzip/crc32_gzip.asm igzip/detect_repeated_char.asm \
+		igzip/crc32_gzip.asm \
 		igzip/adler32_sse.asm \
 		igzip/adler32_avx2_4.asm \
 		igzip/igzip_multibinary.asm \
diff --git a/igzip/detect_repeated_char.asm b/igzip/detect_repeated_char.asm
deleted file mode 100644
index 2f6c07a..0000000
--- a/igzip/detect_repeated_char.asm
+++ /dev/null
@@ -1,81 +0,0 @@
-;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
-;  Copyright(c) 2011-2016 Intel Corporation All rights reserved.
-;
-;  Redistribution and use in source and binary forms, with or without
-;  modification, are permitted provided that the following conditions
-;  are met:
-;    * Redistributions of source code must retain the above copyright
-;      notice, this list of conditions and the following disclaimer.
-;    * Redistributions in binary form must reproduce the above copyright
-;      notice, this list of conditions and the following disclaimer in
-;      the documentation and/or other materials provided with the
-;      distribution.
-;    * Neither the name of Intel Corporation nor the names of its
-;      contributors may be used to endorse or promote products derived
-;      from this software without specific prior written permission.
-;
-;  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-;  "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-;  LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-;  A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-;  OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-;  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-;  LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-;  DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-;  THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-;  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-;  OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
-
-%include "reg_sizes.asm"
-
-;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
-;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
-;;
-;; detect_repeated_char buf, size
-%ifidn __OUTPUT_FORMAT__, elf64
- %define buf           rdi
- %define size          rsi
-%elifidn __OUTPUT_FORMAT__, win64
- %define buf           rcx
- %define size          rdx
-%endif ; output formats
-
-%define tmp           r10
-
-global detect_repeated_char
-detect_repeated_char:
-
-;; replicate the 1st byte to 8 bytes
-	xor	tmp, tmp
-	xor	rax, rax
-
-	mov	al, [buf]
-	mov     ah, al
-	mov     tmp %+ w, ax
-	shl	tmp, 16
-	or	eax, tmp %+ d
-	mov	tmp %+ d, eax
-	shl	tmp, 32
-	or	rax, tmp
-
-;; detect the 8K input
-	lea	tmp, [buf + size]
-_loop:
-	cmp	rax, [buf]
-	jne	_fail
-	add	buf, 8
-	cmp	buf, tmp
-	jb	_loop
-	shr	rax, 56
-	jmp	_end
-
-_fail:
-	mov	rax, -1
-
-_end:
-	ret
-
-%undef buf
-%undef size
-%undef tmp
diff --git a/igzip/igzip.c b/igzip/igzip.c
index 01ca1d8..ded73a4 100644
--- a/igzip/igzip.c
+++ b/igzip/igzip.c
@@ -84,8 +84,6 @@ static void write_stream_header(struct isal_zstream *stream);
 static int write_deflate_header_stateless(struct isal_zstream *stream);
 static int write_deflate_header_unaligned_stateless(struct isal_zstream *stream);
 
-unsigned int detect_repeated_char(uint8_t * buf, uint32_t size);
-
 #define TYPE0_HDR_LEN 4
 #define TYPE0_BLK_HDR_LEN 5
 #define TYPE0_MAX_BLK_LEN 65535