diff --git a/libsqlite3-sys/build.rs b/libsqlite3-sys/build.rs
index 6b16233..43338a0 100644
--- a/libsqlite3-sys/build.rs
+++ b/libsqlite3-sys/build.rs
@@ -283,6 +283,7 @@ mod build_bundled {
             cfg.file("sqlite3/wasm32-unknown-unknown/libc/string/strlen.c");
             cfg.file("sqlite3/wasm32-unknown-unknown/libc/string/strncmp.c");
             cfg.file("sqlite3/wasm32-unknown-unknown/libc/string/strrchr.c");
+            cfg.file("sqlite3/wasm32-unknown-unknown/libc/string/strspn.c");
         }
         if cfg!(feature = "unlock_notify") {
             cfg.flag("-DSQLITE_ENABLE_UNLOCK_NOTIFY");
diff --git a/libsqlite3-sys/sqlite3/wasm32-unknown-unknown/include/math.h b/libsqlite3-sys/sqlite3/wasm32-unknown-unknown/include/math.h
index 329fc63..c8ae697 100644
--- a/libsqlite3-sys/sqlite3/wasm32-unknown-unknown/include/math.h
+++ b/libsqlite3-sys/sqlite3/wasm32-unknown-unknown/include/math.h
@@ -1 +1,2 @@
+double fabs(double x);
 double log(double x);
\ No newline at end of file