diff --git a/configure b/configure
index 5e42b12..d8f059f 100755
--- a/configure
+++ b/configure
@@ -6497,7 +6497,7 @@ enabled libwebp           && {
     enabled libwebp_encoder      && require_pkg_config libwebp "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
     enabled libwebp_anim_encoder && check_pkg_config libwebp_anim_encoder "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit; }
 enabled libx264           && { check_pkg_config libx264 x264 "stdint.h x264.h" x264_encoder_encode ||
-                               { require libx264 "stdint.h x264.h" x264_encoder_encode "-lx264 $pthreads_extralibs $libm_extralibs" &&
+                               { require libx264 "stdint.h x264.h" x264_encoder_encode "-lx264 $pthreads_extralibs $libm_extralibs -ldl" &&
                                  warn "using libx264 without pkg-config"; } } &&
                              require_cpp_condition libx264 x264.h "X264_BUILD >= 118" &&
                              check_cpp_condition libx262 x264.h "X264_MPEG2"