diff --git a/cmd/parse_line.go b/cmd/parse_line.go
index 87029c4..c1c34b9 100644
--- a/cmd/parse_line.go
+++ b/cmd/parse_line.go
@@ -60,6 +60,7 @@ var regexpIsOMname = regexp.MustCompile("^@")
 var regexpIsGridLoc = regexp.MustCompile("^#")
 var regexpIsRst = regexp.MustCompile("^[\\d]{1,3}$")
 var regexpIsFreq = regexp.MustCompile("^[\\d]+\\.[\\d]+$")
+var regexpIsSotaKeyWord = regexp.MustCompile("(?i)^sota")
 
 // ParseLine cuts a FLE line into useful bits
 func ParseLine(inputStr string, previousLine LogLine) (logLine LogLine, errorMsg string) {
@@ -232,7 +233,13 @@ func ParseLine(inputStr string, previousLine LogLine) (logLine LogLine, errorMsg
 				continue
 			}
 
-			// Is it a WWFF to WWFF reference?
+			// If the "sota" keyword is used, skip it
+			if regexpIsSotaKeyWord.MatchString(element) {
+				// this keyword is not supported anymore with FLE 3 and doesn't add any value 
+				continue
+			}			
+
+			// Is it a Summit to Summit (sota) reference?
 			workRef, sotaErr := ValidateSota(element)
 			if sotaErr == "" {
 				logLine.SOTA = workRef
diff --git a/cmd/parse_line_test.go b/cmd/parse_line_test.go
index 1501a46..06e0c70 100644
--- a/cmd/parse_line_test.go
+++ b/cmd/parse_line_test.go
@@ -106,6 +106,11 @@ func TestParseLine(t *testing.T) {
 			args{inputStr: "1230 on4kjm 5 599", previousLine: LogLine{Mode: "FM", ModeType: "PHONE"}},
 			LogLine{Call: "ON4KJM", Time: "1230", ActualTime: "1230", RSTsent: "55", RSTrcvd: "*599", Mode: "FM", ModeType: "PHONE"}, "Invalid report (599) for PHONE mode ",
 		},
+		{
+			"SOTA keywork ",
+			args{inputStr: "1230 oe6cud/p sota oe/st-309", previousLine: LogLine{Mode: "FM", ModeType: "PHONE"}},
+			LogLine{Call: "OE6CUD/P", Time: "1230", ActualTime: "1230", RSTsent: "59", RSTrcvd: "59", Mode: "FM", ModeType: "PHONE", SOTA: "OE/ST-309"}, "",
+		},
 	}
 	for _, tt := range tests {
 		t.Run(tt.name, func(t *testing.T) {
diff --git a/cmd/validate.go b/cmd/validate.go
index c95a2f1..e6c1ff1 100644
--- a/cmd/validate.go
+++ b/cmd/validate.go
@@ -50,7 +50,7 @@ func ValidateWwff(inputStr string) (ref, errorMsg string) {
 }
 
 var validCallRegexp = regexp.MustCompile(`[\d]{0,1}[A-Z]{1,2}\d([A-Z]{1,4}|\d{3,3}|\d{1,3}[A-Z])[A-Z]{0,5}`)
-var validPrefixRegexp = regexp.MustCompile(`\A\d?[a-zA-Z]{1,2}$`)
+var validPrefixRegexp = regexp.MustCompile(`\A[a-zA-Z0-9]{1,3}$`)
 
 // ValidateCall verifies whether the supplied string is a valid callsign.
 // prefix and suffix are not checked for validity
diff --git a/cmd/validate_test.go b/cmd/validate_test.go
index a6cba3e..c9083a2 100644
--- a/cmd/validate_test.go
+++ b/cmd/validate_test.go
@@ -182,7 +182,17 @@ func TestValidateCall(t *testing.T) {
 			args{sign: "DL/on4KJm/qrpp "},
 			"DL/ON4KJM/QRPP", "",
 		},
-		//Error cases
+		{
+			"Valid prefix (issue #2)",
+			args{sign: "e7/z35m/p"},
+			"E7/Z35M/P", "",
+		},
+		{
+			"Valid E7 callsign (issue #2)",
+			args{sign: "e7xyz"},
+			"E7XYZ", "",
+		},
+		//*** Error cases *****
 		{
 			"Pure junk passed",
 			args{sign: "aaaaaa"},
@@ -200,8 +210,8 @@ func TestValidateCall(t *testing.T) {
 		},
 		{
 			"invalid prefix",
-			args{sign: "xyz/on4kjm"},
-			"*XYZ/ON4KJM", "Invalid prefix",
+			args{sign: "xyz4/on4kjm"},
+			"*XYZ4/ON4KJM", "Invalid prefix",
 		},
 		{
 			"Too many /",
diff --git a/test/data/fle-2.txt b/test/data/fle-2.txt
new file mode 100644
index 0000000..091e5b4
--- /dev/null
+++ b/test/data/fle-2.txt
@@ -0,0 +1,60 @@
+date 2020-07-19
+mycall  ON6ZQ/P
+mysota  ON/ON-018
+
+# No 1
+
+# Spotlite
+# ON6ZQ/P ON ON-018 7.032 cw
+
+# parking:
+# Rue du Broux
+# 6940 Durbuy
+# 50.326490, 5.532476
+
+cw
+30m
+1150
+
+55 ix1ihr
+f8dgf
+56 ea2dt
+57 oe6cud/p sota oe/st-309
+yo6cfb
+1200 e7/z35m/p
+dl2hwi
+04 oe7phi
+04 dl8dxl
+05 ok1dpu
+ei5hj
+iw0hk
+g3rtu
+07 ok2uz
+08 ct1drb
+ok2k
+11 dd6do
+12 oz6abz
+13 ea2if/p sota ea2/nv-189
+dl5dxs/p  oo25
+15 dl7uxg
+
+40m
+25 dl1fu
+26 hb9agh
+30 oe8spw
+yl3cw
+hb9bhu/p sota hb/bl-005
+dl7vkd
+31 hb9cbr/p sota hb/NE-007
+hb9afi/p sota hb/VS-239
+m0tcl/p
+f6dra
+35 g0aol
+
+# Parsing error at line 22: Unable to parse sota
+# Parsing error at line 24: Invalid prefix
+# Parsing error at line 37: Unable to parse sota
+# Parsing error at line 38: Unable to parse oo25
+# Parsing error at line 46: Unable to parse sota
+# Parsing error at line 48: Unable to parse sota
+# Parsing error at line 49: Unable to parse sota
\ No newline at end of file