diff --git a/baked_in.go b/baked_in.go
index 9fe732c..04cf57d 100644
--- a/baked_in.go
+++ b/baked_in.go
@@ -177,7 +177,10 @@ func parseOneOfParam2(s string) []string {
 	oneofValsCacheRWLock.RUnlock()
 	if !ok {
 		oneofValsCacheRWLock.Lock()
-		vals = strings.Fields(s)
+		vals = splitParamsRegex.FindAllString(s, -1)
+		for i := 0; i < len(vals); i++ {
+			vals[i] = strings.Replace(vals[i], "'", "", -1)
+		}
 		oneofValsCache[s] = vals
 		oneofValsCacheRWLock.Unlock()
 	}
diff --git a/doc.go b/doc.go
index 95029dd..cdfb759 100644
--- a/doc.go
+++ b/doc.go
@@ -361,10 +361,12 @@ One Of
 
 For strings, ints, and uints, oneof will ensure that the value
 is one of the values in the parameter.  The parameter should be
-a list of values separated by whitespace.  Values may be
-strings or numbers.
+a list of values separated by whitespace. Values may be
+strings or numbers. To match strings with spaces in them, include
+the target string between single quotes.
 
     Usage: oneof=red green
+           oneof='red green' 'blue yellow'
            oneof=5 7 9
 
 Greater Than
diff --git a/regexes.go b/regexes.go
index 7161804..6343abe 100644
--- a/regexes.go
+++ b/regexes.go
@@ -46,6 +46,7 @@ const (
 	uRLEncodedRegexString            = `(%[A-Fa-f0-9]{2})`
 	hTMLEncodedRegexString           = `&#[x]?([0-9a-fA-F]{2})|(&gt)|(&lt)|(&quot)|(&amp)+[;]?`
 	hTMLRegexString                  = `<[/]?([a-zA-Z]+).*?>`
+	splitParamsRegexString           = `'[^']*'|\S+`
 )
 
 var (
@@ -92,4 +93,5 @@ var (
 	uRLEncodedRegex            = regexp.MustCompile(uRLEncodedRegexString)
 	hTMLEncodedRegex           = regexp.MustCompile(hTMLEncodedRegexString)
 	hTMLRegex                  = regexp.MustCompile(hTMLRegexString)
+	splitParamsRegex           = regexp.MustCompile(splitParamsRegexString)
 )
diff --git a/validator_test.go b/validator_test.go
index 7ea5be5..968503e 100644
--- a/validator_test.go
+++ b/validator_test.go
@@ -4487,6 +4487,8 @@ func TestOneOfValidation(t *testing.T) {
 	}{
 		{f: "red", t: "oneof=red green"},
 		{f: "green", t: "oneof=red green"},
+		{f: "red green", t: "oneof='red green' blue"},
+		{f: "blue", t: "oneof='red green' blue"},
 		{f: 5, t: "oneof=5 6"},
 		{f: 6, t: "oneof=5 6"},
 		{f: int8(6), t: "oneof=5 6"},
@@ -4512,6 +4514,7 @@ func TestOneOfValidation(t *testing.T) {
 	}{
 		{f: "", t: "oneof=red green"},
 		{f: "yellow", t: "oneof=red green"},
+		{f: "green", t: "oneof='red green' blue"},
 		{f: 5, t: "oneof=red green"},
 		{f: 6, t: "oneof=red green"},
 		{f: 6, t: "oneof=7"},