--- a/libs/srtp/configure.ac
+++ b/libs/srtp/configure.ac
@@ -130,9 +130,12 @@ if test "$enable_kernel_linux" = "yes";
 fi
 AC_MSG_RESULT($enable_kernel_linux)
 
-dnl Check for /dev/urandom
-AC_CHECK_FILE(/dev/urandom, DEV_URANDOM=/dev/urandom,
-   [AC_CHECK_FILE(/dev/random, DEV_URANDOM=/dev/random)])
+
+dnl Check for /dev/urandom ONLY when NOT cross compiling
+if test "$cross_compiling" != yes; then
+  AC_CHECK_FILE(/dev/urandom, DEV_URANDOM=/dev/urandom,
+     [AC_CHECK_FILE(/dev/random, DEV_URANDOM=/dev/random)])
+fi
 
 dnl Checks for header files.
 AC_HEADER_STDC