diff --git a/.travis.yml b/.travis.yml
index 5824e2f83..97d396d29 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -22,7 +22,8 @@ script:
     - rustc --version
     - cargo build --all
     - cargo test --all
-    - cd examples && cargo build --features=gst-player
+    - cargo build --all --all-features
+    - cargo test --all --all-features
 
 before_install:
 - curl -L https://people.freedesktop.org/~slomo/gstreamer.tar.gz | tar xz
diff --git a/gstreamer-audio/Cargo.toml b/gstreamer-audio/Cargo.toml
index 4499c79d3..44ccd8fc7 100644
--- a/gstreamer-audio/Cargo.toml
+++ b/gstreamer-audio/Cargo.toml
@@ -26,8 +26,8 @@ version = "0.1"
 optional = true
 
 [features]
-v1_10 = ["gstreamer-sys/v1_10"]
-v1_12 = ["gstreamer-sys/v1_12", "v1_10"]
+v1_10 = ["gstreamer-sys/v1_10", "gstreamer-audio-sys/v1_10"]
+v1_12 = ["gstreamer-sys/v1_12", "gstreamer-audio-sys/v1_12", "v1_10"]
 embed-lgpl-docs = ["rustdoc-stripper"]
 purge-lgpl-docs = ["rustdoc-stripper"]
 default-features = []
diff --git a/gstreamer-video/Cargo.toml b/gstreamer-video/Cargo.toml
index fd3a642c5..1992aca09 100644
--- a/gstreamer-video/Cargo.toml
+++ b/gstreamer-video/Cargo.toml
@@ -25,8 +25,8 @@ version = "0.1"
 optional = true
 
 [features]
-v1_10 = ["gstreamer-sys/v1_10"]
-v1_12 = ["gstreamer-sys/v1_12", "v1_10"]
+v1_10 = ["gstreamer-sys/v1_10", "gstreamer-video-sys/v1_10"]
+v1_12 = ["gstreamer-sys/v1_12", "gstreamer-video-sys/v1_12", "v1_10"]
 embed-lgpl-docs = ["rustdoc-stripper"]
 purge-lgpl-docs = ["rustdoc-stripper"]
 default-features = []
diff --git a/gstreamer-video/src/video_info.rs b/gstreamer-video/src/video_info.rs
index dbadb2d61..d7202ec24 100644
--- a/gstreamer-video/src/video_info.rs
+++ b/gstreamer-video/src/video_info.rs
@@ -664,7 +664,7 @@ impl ::VideoFieldOrder {
         unsafe { from_glib_full(ffi::gst_video_field_order_to_string(self.to_glib())) }
     }
 
-    pub fn from_string(s: &str) -> Option<Self> {
+    pub fn from_string(s: &str) -> Self {
         unsafe { from_glib(ffi::gst_video_field_order_from_string(s.to_glib_none().0)) }
     }
 }
@@ -674,7 +674,7 @@ impl str::FromStr for ::VideoFieldOrder {
     type Err = ();
 
     fn from_str(s: &str) -> Result<Self, ()> {
-        Self::from_string(s).ok_or(())
+        Ok(Self::from_string(s))
     }
 }