diff --git a/dist-build/generate-emscripten-symbols.sh b/dist-build/generate-emscripten-symbols.sh
index 20e1d790..b520371b 100755
--- a/dist-build/generate-emscripten-symbols.sh
+++ b/dist-build/generate-emscripten-symbols.sh
@@ -2,6 +2,8 @@
 
 set -e
 
+LIBSODIUM=${LIBSODIUM:-/tmp/sodium/lib/libsodium.27.dylib}
+
 symbols() {
   {
     SUMO="$1"
@@ -17,7 +19,7 @@ symbols() {
       fi
     done <emscripten-symbols.def
 
-    /usr/bin/nm /usr/local/lib/libsodium.27.dylib |
+    /usr/bin/nm "$LIBSODIUM" |
       fgrep ' T _' |
       cut -d' ' -f3 | {
       while read symbol; do