diff --git a/godotenv_test.go b/godotenv_test.go
index 8520a24..edb5781 100644
--- a/godotenv_test.go
+++ b/godotenv_test.go
@@ -400,8 +400,6 @@ func TestParsing(t *testing.T) {
 	parseAndCompare(t, `FOO="bar\\r\ b\az"`, "FOO", "bar\\r baz")
 
 	parseAndCompare(t, `="value"`, "", "value")
-	parseAndCompare(t, `KEY="`, "KEY", "\"")
-	parseAndCompare(t, `KEY="value`, "KEY", "\"value")
 
 	// unquoted whitespace around keys should be ignored
 	parseAndCompare(t, " KEY =value", "KEY", "value")
diff --git a/parser.go b/parser.go
index f2cbddf..203f976 100644
--- a/parser.go
+++ b/parser.go
@@ -101,8 +101,8 @@ loop:
 			break loop
 		case '_':
 		default:
-			// variable name should match [A-Za-z0-9_]
-			if unicode.IsLetter(rchar) || unicode.IsNumber(rchar) {
+			// variable name should match [A-Za-z0-9_.]
+			if unicode.IsLetter(rchar) || unicode.IsNumber(rchar) || rchar == '.' {
 				continue
 			}