diff --git a/configure.ac b/configure.ac
index 1429253..b703403 100644
--- a/configure.ac
+++ b/configure.ac
@@ -30,8 +30,8 @@
 AX_APPEND_COMPILE_FLAGS([-fpic -Wall -Werror], [CXXFLAGS])
 
 # Checks for header files.
-AC_CHECK_HEADER(systemd/sd-bus.h, ,[AC_MSG_ERROR([Could not find systemd/sd-bus.h...systemd developement package required])])
-AC_CHECK_HEADER(sdbusplus/server.hpp, ,[AC_MSG_ERROR([Could not find sdbusplus/server.hpp...sdbusplus developement package required])])
+AC_CHECK_HEADER(systemd/sd-bus.h, ,[AC_MSG_ERROR([Could not find systemd/sd-bus.h...systemd development package required])])
+AC_CHECK_HEADER(sdbusplus/server.hpp, ,[AC_MSG_ERROR([Could not find sdbusplus/server.hpp...sdbusplus development package required])])
 
 # Checks for library functions.
 LT_INIT # Removes 'unrecognized options: --with-libtool-sysroot'