diff --git a/websh.c b/websh.c
index 742adc7..d17c114 100644
--- a/websh.c
+++ b/websh.c
@@ -17,6 +17,10 @@
 
 static const char *pname;
 
+static int eFlag = 0;
+static int hFlag = 0;
+static int sFlag = 0;
+
 static const char *word;
 static const char *tag;
 
@@ -26,12 +30,26 @@ void usage(void)
 	exit(EXIT_FAILURE);
 }
 
+void parsesArg(char *sArg)
+{
+	char *token;
+	int i = 0;
+	while ((token = strsep(&sArg, ":"))) {
+		if (strcmp(token, "") == 0)
+			usage();
+		if (i == 2)
+			usage();
+		if (i == 0) {
+			word = token;
+		} else {
+			tag = token;
+		}
+		i++;
+	}
+}
+
 void parse(int argc, char *argv[])
 {
-	int eFlag = 0;
-	int hFlag = 0;
-	int sFlag = 0;
-
 	int optInd = 0;
 	char *sArg;
 
@@ -57,6 +75,7 @@ void parse(int argc, char *argv[])
 				} else {
 					sFlag = 1;
 					sArg = optarg;
+					parsesArg(sArg);
 				}
 				break;
 			case '?':
@@ -67,19 +86,6 @@ void parse(int argc, char *argv[])
 		}
 	}
 	
-	char *token;
-	int i = 0;
-	while ((token = strsep(&sArg, ":"))) {
-		if (i == 2)
-			usage();
-		if (i == 0) {
-			word = token;
-		} else {
-			tag = token;
-		}
-		i++;
-	}
-
 	pname = argv[0];
 }