diff --git a/configure.ac b/configure.ac
index 141acc6c..0f667dca 100644
--- a/configure.ac
+++ b/configure.ac
@@ -445,7 +445,6 @@ AC_TYPE_OFF_T
 AC_TYPE_PID_T
 AC_TYPE_SIZE_T
 AC_TYPE_UID_T
-AC_TYPE_SIGNAL
 AX_TYPE_SOCKLEN_T
 AC_CHECK_SIZEOF([unsigned int])
 AC_CHECK_SIZEOF([unsigned long])