diff --git a/kappy/kappa_std.py b/kappy/kappa_std.py
index a6db3e438..78314648f 100644
--- a/kappy/kappa_std.py
+++ b/kappy/kappa_std.py
@@ -17,10 +17,13 @@
 from .kappa_graph import KappaSnapshot
 
 def find_agent_bin():
-    dune_build_dir = '_build/install/default'
+    potential_dirs = []
+    for base_dir in [KAPPY_DIR, KASIM_DIR]:
+        for dune_build_dir in ['', '_build/install/default', '_build/default']:
+            potential_dirs.append(os.path.join(base_dir, dune_build_dir)
     agent_names = ['KappaSwitchman']
     bin_dir = None
-    for potential_dir in [KAPPY_DIR, KASIM_DIR, os.path.join(KAPPY_DIR, dune_build_dir), os.path.join(KASIM_DIR, dune_build_dir)]:
+    for potential_dir in potential_dirs:
         bin_dir = os.path.join(potential_dir, 'bin')
         if not os.path.exists(bin_dir):
             continue