diff --git a/.gitignore b/.gitignore
index 26e322c..a281a74 100644
--- a/.gitignore
+++ b/.gitignore
@@ -3,7 +3,7 @@ i3lock
 tags
 *.swp
 *.gz
-/pam/i3lock
+*~
 
 ################################################################################
 # https://raw.githubusercontent.com/github/gitignore/master/Autotools.gitignore
@@ -31,4 +31,3 @@ Makefile.in
 /install-sh
 /missing
 /stamp-h1
-*.in~
diff --git a/configure.ac b/configure.ac
index 0f72a1e..c56ba03 100644
--- a/configure.ac
+++ b/configure.ac
@@ -2,7 +2,7 @@
 # Run autoreconf -fi to generate a configure script from this file.
 
 AC_PREREQ([2.69])
-AC_INIT([i3lock-color], [m4_esyscmd_s([cat I3LOCK_VERSION])], [https://github.com/Raymo11/i3lock-color/issues])
+AC_INIT([i3lock-color],[m4_esyscmd_s([cat I3LOCK_VERSION])],[https://github.com/Raymo11/i3lock-color/issues])
 # For AX_EXTEND_SRCDIR
 AX_ENABLE_BUILDDIR
 AM_INIT_AUTOMAKE([foreign subdir-objects -Wall no-dist-gzip dist-bzip2])
@@ -50,7 +50,7 @@ dnl is_release must be lowercase because AX_CHECK_ENABLE_DEBUG calls m4_tolower
 dnl on its fourth argument.
 AX_CHECK_ENABLE_DEBUG([yes], , [UNUSED_NDEBUG], [$is_release])
 
-AC_PROG_CC_C99
+AC_PROG_CC
 
 # For strnlen() and vasprintf().
 AC_USE_SYSTEM_EXTENSIONS