diff --git a/fsl_glm.cc b/fsl_glm.cc
index 4c9031a9088b4bd31135139cb55e5b61fa549014..eb1537d39c59b3334dd6f43f525583fa538ab296 100644
--- a/fsl_glm.cc
+++ b/fsl_glm.cc
@@ -52,10 +52,10 @@ using namespace std;
 		string("        set degrees-of-freedom explicitly"),
 		false, requires_argument);
 	Option<bool> normdes(string("--des_norm"),FALSE,
-		string("        switch on normalisation of the design matrix columns to unit std. deviation"),
+		string("switch on normalisation of the design matrix columns to unit std. deviation"),
 		false, no_argument);
 	Option<bool> perfvn(string("--vn"),FALSE,
-		string("        perfrom MELODIC variance-normalisation on data"),
+		string("        perform MELODIC variance-normalisation on data"),
 		false, no_argument);
 	Option<int> help(string("-h,--help"), 0,
 		string("display this help text"),