diff --git a/Makefile.am b/Makefile.am
index 33b95821..8e22d903 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -1,5 +1,5 @@
 # Specify automake version.
-AUTOMAKE_OPTIONS  = 1.14.0
+AUTOMAKE_OPTIONS  = 1.13.4
 
 ##
 # Rofi the program
diff --git a/configure.ac b/configure.ac
index 3c6445d6..834ebe6f 100644
--- a/configure.ac
+++ b/configure.ac
@@ -14,6 +14,7 @@ AM_SILENT_RULES([yes])
 ##
 AC_PROG_CC([clang gcc cc])
 AC_PROG_CC_C99
+AM_PROG_CC_C_O
 
 AC_USE_SYSTEM_EXTENSIONS