diff --git a/client/build.sh b/client/build.sh
index 0eb7ddd..39cdd16 100755
--- a/client/build.sh
+++ b/client/build.sh
@@ -10,7 +10,7 @@ OUT_FILE="out/libcurl.js"
 EXPORTED_FUNCS="_main,_perform_request"
 RUNTIME_METHODS="addFunction,removeFunction,allocate,ALLOC_NORMAL"
 COMPILER_OPTIONS="-o $OUT_FILE -lcurl -lssl -lcrypto -lcjson -I $INCLUDE_DIR -L $LIB_DIR"
-EMSCRIPTEN_OPTIONS="-lwebsocket.js -sWEBSOCKET_URL=wss://debug.ading.dev/ws -sASYNCIFY -sALLOW_TABLE_GROWTH -sEXPORTED_FUNCTIONS=$EXPORTED_FUNCS -sEXPORTED_RUNTIME_METHODS=$RUNTIME_METHODS --preload-file $CACERT_FILE"
+EMSCRIPTEN_OPTIONS="-lwebsocket.js -sWEBSOCKET_URL=wss://debug.ading.dev/ws -sSINGLE_FILE -sASYNCIFY -sALLOW_TABLE_GROWTH -sEXPORTED_FUNCTIONS=$EXPORTED_FUNCS -sEXPORTED_RUNTIME_METHODS=$RUNTIME_METHODS --preload-file $CACERT_FILE"
 
 if [ ! -f $CACERT_FILE ]; then
   wget "https://curl.se/ca/cacert.pem" -O $CACERT_FILE
@@ -18,8 +18,14 @@ fi
 
 tools/all_deps.sh
 
+rm -rf out
 mkdir -p out
+
 COMPILE_CMD="emcc main.c $COMPILER_OPTIONS $EMSCRIPTEN_OPTIONS"
 echo $COMPILE_CMD
 $COMPILE_CMD
+
+#patch the output to work around some emscripten bugs
+sed -i 's/err("__syscall_getsockname " \?+ \?fd);//' $OUT_FILE
+sed -i 's/function _emscripten_console_error(str) {/& if(UTF8ToString(str).endsWith("__syscall_setsockopt\\n")) return;/' $OUT_FILE
 mv out/libcurl.data ./
\ No newline at end of file
diff --git a/client/main.js b/client/main.js
index c464d67..80fc8a0 100644
--- a/client/main.js
+++ b/client/main.js
@@ -79,27 +79,6 @@ function allocate_array(array) {
   return allocate(array, ALLOC_NORMAL);
 }
 
-//make emscripten shut up about unsupported syscalls
-function silence_errs() { 
-  window._err = window.err;
-  window.err = function() {
-    let arg = arguments[0];
-    if (is_str(arg) && arg.startsWith("__syscall_getsockname")) {
-      return;
-    }
-    window._err(...arguments);
-  }
-
-  window._console_error = window.console.error;
-  window.console.error = function() {
-    let arg = arguments[0];
-    if (is_str(arg) && arg === "warning: unsupported syscall: __syscall_setsockopt\n") {
-      return;
-    }
-    window._console_error(...arguments);
-  }
-}
-
 //low level interface with c code
 function perform_request(url, params, js_data_callback, js_end_callback, body=null) {
   let params_str = JSON.stringify(params);
@@ -201,7 +180,6 @@ function libcurl_fetch(url, params={}) {
 }
 
 async function main() {
-  silence_errs();
   console.log(await libcurl_fetch("https://httpbin.org/anything"));
 }