diff --git a/configure.ac b/configure.ac
index 6e9b2118fea9508372c764739749b0ff47c649d2..ac0528faea25b55fc7bb9e0a428eae06453ebbc7 100644
--- a/configure.ac
+++ b/configure.ac
@@ -83,7 +83,7 @@ AC_CHECK_DECL(__UCLIBC__,
 	],,,)
 
 # Checks for libraries.
-AC_SEARCH_LIBS(crypt, crypt, CRYPTLIB="-lcrypt")
+AC_CHECK_LIB(crypt, crypt, CRYPTLIB="-lcrypt")
 AC_SUBST(CRYPTLIB)	
 
 # Check if zlib is needed