diff --git a/silnlp/alignment/config.py b/silnlp/alignment/config.py
index 55a74796..7855acd6 100644
--- a/silnlp/alignment/config.py
+++ b/silnlp/alignment/config.py
@@ -67,9 +67,10 @@
     "clear3_fa": (ClearAligner, "Clear-3-FA"),
     "clear3_hmm": (ClearAligner, "Clear-3-HMM"),
     "clab_fast_align": (FastAlign, "clab-FastAlign"),
-    "eflomal": (EflomalAligner, "Eflomal"),
 }
 
+if is_eflomal_available():
+    ALIGNERS["eflomal"] = (EflomalAligner, "Eflomal")
 
 STEMMERS: Dict[str, Type[Stemmer]] = {
     "snowball": SnowballStemmer,