diff --git a/config/thesis_commands.tex b/config/thesis_commands.tex
index e6913c3..42bbc43 100644
--- a/config/thesis_commands.tex
+++ b/config/thesis_commands.tex
@@ -67,9 +67,9 @@
     \setkeys{Gin}{height=#1}%
 }
 
-\RenewDocumentCommand{\subfig}{o O{b} m O{}}{% #1 = width, #2 = valign, #3 = filename, #4 = caption
+\RenewDocumentCommand{\subfig}{o O{b} m}{% #1 = width, #2 = valign, #3 = filename
     \hfill%
-    \subfloat[#4\label{fig:#3}]{%
+    \subfloat[\label{fig:#3}]{%
         \IfValueTF{#1}{%
             \includegraphics[width=#1\linewidth, valign=#2, keepaspectratio]{#3}%
         }{%