diff --git a/pkg.go b/pkg.go
index e4c1c22..2014bf2 100644
--- a/pkg.go
+++ b/pkg.go
@@ -6,6 +6,7 @@ import (
 	"io/ioutil"
 	"path/filepath"
 	"time"
+	"strings"
 )
 
 const (
@@ -146,6 +147,7 @@ func newPackage() *pkg {
 }
 
 func (p *pkg) addToManifest(id string, href string, mediaType string, properties string) {
+	href = strings.Replace(href, "\\", "/", -1)
 	i := &pkgItem{
 		ID:         id,
 		Href:       href,
diff --git a/toc.go b/toc.go
index bab654f..1663291 100644
--- a/toc.go
+++ b/toc.go
@@ -6,6 +6,7 @@ import (
 	"io/ioutil"
 	"path/filepath"
 	"strconv"
+	"strings"
 )
 
 const (
@@ -148,6 +149,7 @@ func newTocNcxXML() *tocNcxRoot {
 
 // Add a section to the TOC (navXML as well as ncxXML)
 func (t *toc) addSection(index int, title string, relativePath string) {
+	relativePath = strings.Replace(relativePath, "\\", "/", -1)
 	l := &tocNavItem{
 		A: tocNavLink{
 			Href: relativePath,
diff --git a/write.go b/write.go
index 5212c54..d238f18 100644
--- a/write.go
+++ b/write.go
@@ -220,6 +220,7 @@ func (e *Epub) writeEpub(tempDir string, destFilePath string) error {
 
 		// Get the path of the file relative to the folder we're zipping
 		relativePath, err := filepath.Rel(tempDir, path)
+		relativePath = strings.Replace(relativePath, "\\", "/", -1)
 		if err != nil {
 			// tempDir and path are both internal, so we shouldn't get here
 			panic(fmt.Sprintf("Error closing EPUB file: %s", err))