diff --git a/src/physfs_platform_unix.c b/src/physfs_platform_unix.c
index 10d93a7..06ed580 100644
--- a/src/physfs_platform_unix.c
+++ b/src/physfs_platform_unix.c
@@ -248,6 +248,11 @@ static char *readSymLink(const char *path)
 
 char *__PHYSFS_platformCalcBaseDir(const char *argv0)
 {
+#ifdef __EMSCRIPTEN__
+    char *root = (char *) allocator.Malloc(2);
+    if (root) strcpy(root, "/");
+    return root;
+#endif
     char *retval = NULL;
     const char *envr = NULL;