diff --git a/nac3standalone/demo/run_demo.sh b/nac3standalone/demo/run_demo.sh
index b9e25d85..55eec4b4 100755
--- a/nac3standalone/demo/run_demo.sh
+++ b/nac3standalone/demo/run_demo.sh
@@ -42,11 +42,14 @@ done
 
 if [ -n "$debug" ] && [ -e ../../target/debug/nac3standalone ]; then
     nac3standalone=../../target/debug/nac3standalone
+    linalg_externfns=../../target/debug/deps/liblinalg_externfns-?*.a
 elif [ -e ../../target/release/nac3standalone ]; then
     nac3standalone=../../target/release/nac3standalone
+    linalg_externfns=../../target/release/deps/liblinalg_externfns-?*.a
 else
     # used by Nix builds
     nac3standalone=../../target/x86_64-unknown-linux-gnu/release/nac3standalone
+    linalg_externfns=../../target/x86_64-unknown-linux-gnu/release/deps/liblinalg_externfns-?*.a
 fi
 
 rm -f ./*.o ./*.bc demo
@@ -55,14 +58,14 @@ if [ -z "$i386" ]; then
   $nac3standalone "${nac3args[@]}"
 
   clang -c -std=gnu11 -Wall -Wextra -O3 -o demo.o demo.c
-  clang -lm -Wl,--no-warn-search-mismatch -o demo module.o demo.o
+  clang -lm -Wl,--no-warn-search-mismatch -o demo module.o demo.o $linalg_externfns
 else
    # Enable SSE2 to avoid rounding errors with X87's 80-bit fp precision computations
 
    $nac3standalone --triple i386-pc-linux-gnu --target-features +sse2 "${nac3args[@]}"
 
    clang -m32 -c -std=gnu11 -Wall -Wextra -O3 -msse2 -o demo.o demo.c
-   clang -m32 -lm -Wl,--no-warn-search-mismatch -o demo module.o demo.o
+   clang -m32 -lm -Wl,--no-warn-search-mismatch -o demo module.o demo.o $linalg_externfns
 fi
 
 if [ -z "$outfile" ]; then