diff --git a/CMakeLists.txt b/CMakeLists.txt
index a42cee9..28c2089 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,5 +1,5 @@
 cmake_minimum_required(VERSION 3.14)
-project (z)
+project (zlib)
 
 #set(CMAKE_ASM_NASM_LINK_EXECUTABLE ld)
 
diff --git a/example.asm b/example.asm
index 8d1c60c..73cc0b0 100644
--- a/example.asm
+++ b/example.asm
@@ -1,5 +1,5 @@
 extern puts
-extern _libz_strlen
+extern libz_strlen
 extern libz_strcmp
 extern libz_tolower
 
@@ -33,7 +33,7 @@ main:
 
 
 	mov rdi, text2
-	call _libz_strlen
+	call libz_strlen
 
 	add [stoer], rax
 
diff --git a/strlen.asm b/strlen.asm
index d1fa5c9..64fad05 100644
--- a/strlen.asm
+++ b/strlen.asm
@@ -1,7 +1,7 @@
-global _libz_strlen
+global libz_strlen
 section .text
 
-_libz_strlen:
+libz_strlen:
 	sub rsp, 8	;enter
 
 	mov r10, rdi
diff --git a/tolower.asm b/tolower.asm
index a9672ba..add19b3 100644
--- a/tolower.asm
+++ b/tolower.asm
@@ -1,4 +1,4 @@
-extern _libz_strlen
+extern libz_strlen
 
 global libz_tolower
 section .text
@@ -8,7 +8,7 @@ libz_tolower:
 
 	mov r11, rdi
 
-	call _libz_strlen
+	call libz_strlen
 	mov r10, rax