diff --git a/Makefile b/Makefile
index 53a872b..e1dfe6e 100644
--- a/Makefile
+++ b/Makefile
@@ -1,8 +1,8 @@
 cat: cat.o
 	ld -o cat cat.o
 
-cat.o: cat.s
-	nasm -f elf64 cat.s
+cat.o: cat.nasm
+	nasm -f elf64 cat.nasm
 
 .PHONY: clean
 clean:
diff --git a/README.md b/README.md
index 1e55686..799a820 100644
--- a/README.md
+++ b/README.md
@@ -1,5 +1,5 @@
 # cat
-[![Build Status](https://ci.zander.im/job/asm-cat/badge/icon?style=plastic&subject=Build)](https://ci.zander.im/job/asm-cat/)
+[![Build Status](https://ci.zander.im/job/asm-cat/badge/icon?style=flat&subject=Build)](https://ci.zander.im/job/asm-cat/)
 
 Posix compliant cat written in NASM Assembler for practice. This program
 **ONLY** works on Linux.
diff --git a/cat.s b/cat.nasm
similarity index 100%
rename from cat.s
rename to cat.nasm