diff --git a/generators/fictionbook/libokularGenerator_fb.desktop b/generators/fictionbook/libokularGenerator_fb.desktop
index a09d0481d..c1239ddf9 100644
--- a/generators/fictionbook/libokularGenerator_fb.desktop
+++ b/generators/fictionbook/libokularGenerator_fb.desktop
@@ -55,7 +55,7 @@ Comment[x-test]=xxFictionBook backend for okularxx
 Comment[zh_CN]=okular 的 FictionBook 格式后端
 Comment[zh_TW]=okular FictionBook 後端
 X-KDE-ServiceTypes=okular/Generator
-MimeType=application/x-fb;
+MimeType=application/x-fictionbook;
 X-KDE-Library=okularGenerator_fb
 X-KDE-Priority=1
 X-KDE-okularAPIVersion=1
diff --git a/generators/fictionbook/okularApplication_fb.desktop b/generators/fictionbook/okularApplication_fb.desktop
index 641587897..665a8a57f 100644
--- a/generators/fictionbook/okularApplication_fb.desktop
+++ b/generators/fictionbook/okularApplication_fb.desktop
@@ -1,5 +1,5 @@
 [Desktop Entry]
-MimeType=application/x-fb;
+MimeType=application/x-fictionbook;
 Terminal=false
 Name=okular
 Name[de]=Okular
diff --git a/generators/fictionbook/okularFb.desktop b/generators/fictionbook/okularFb.desktop
index 64ecdff1a..490a122df 100644
--- a/generators/fictionbook/okularFb.desktop
+++ b/generators/fictionbook/okularFb.desktop
@@ -12,4 +12,4 @@ Name[x-test]=xxokularxx
 X-KDE-ServiceTypes=KParts/ReadOnlyPart
 X-KDE-Library=okularpart
 Type=Service
-MimeType=application/x-fb;
+MimeType=application/x-fictionbook;