diff --git a/mutalyzer/describe.py b/mutalyzer/describe.py
index 44e62646fa7e2ba958e29363fb9c47e6da3e9322..4ca3f45352aaab20b2d1e1930198f1757c723903 100644
--- a/mutalyzer/describe.py
+++ b/mutalyzer/describe.py
@@ -256,6 +256,10 @@ def fitFS(peptide, altPeptide, FS):
     @arg FS: Frame shift table.
     @type FS: dict
     """
+    # Todo: This is a temporary fix to prevent crashing on frameshift
+    #     detection (I think bug #124).
+    return False
+
     if len(peptide) < len(altPeptide):
         return False
 
@@ -766,7 +770,7 @@ def protein_description(M, s1, s2, s1_start, s1_end, s2_start, s2_end):
         if (fitFS(s1[s1_start + 1:], s2[s2_start + 1:], FS1) or
             fitFS(s1[s1_start + 1:], s2[s2_start + 1:], FS2) or
             fitFS(s2[s2_start + 1:], s1[s1_start + 2:], FS1) or
-            fitFS(s2[s2_start + 1:], s1[s1_start + 2:], FS2)): 
+            fitFS(s2[s2_start + 1:], s1[s1_start + 2:], FS2)):
             return [RawVar(DNA=False, start=s1_start + 1, deleted=s1[s1_start],
                 inserted=s2[s2_start], term=len(s2) - s2_start, type="fs")]
     #if