diff --git a/beamerthemeawesome.sty b/beamerthemeawesome.sty
index 64f96b2..c7253c5 100644
--- a/beamerthemeawesome.sty
+++ b/beamerthemeawesome.sty
@@ -304,15 +304,15 @@ segmentation style={lcr, solid, shorten >=1mm,shorten <=1mm, line width=\smile@l
 	\begin{beamerbox}{gray}{#1}%
 }{\end{beamerbox}}
 
-\renewenvironment{block}[1][]{%
+\renewenvironment{block}[1]{%
 	\begin{beamerbox}{accent}{#1}%
 }{\end{beamerbox}}
 
-\renewenvironment{examples}[1][]{%
+\renewenvironment{examples}[1]{%
 	\begin{beamerbox}{green}{#1}%
 }{\end{beamerbox}}
 
-\renewenvironment{alertblock}[1][]{%
+\renewenvironment{alertblock}[1]{%
 	\begin{beamerbox}{red}{#1}%
 }{\end{beamerbox}}