diff --git a/src/mat_spec.rs b/src/mat_spec.rs
index bc74ddff..b446bd5d 100644
--- a/src/mat_spec.rs
+++ b/src/mat_spec.rs
@@ -6,103 +6,103 @@ use traits::inv::Inv;
 // some specializations:
 impl<N: DivisionRing + Clone>
 Inv for Mat1<N> {
-  #[inline]
-  fn inverse(&self) -> Option<Mat1<N>> {
-    let mut res : Mat1<N> = self.clone();
+    #[inline]
+    fn inverse(&self) -> Option<Mat1<N>> {
+        let mut res : Mat1<N> = self.clone();
 
-    if res.inplace_inverse() {
-        Some(res)
+        if res.inplace_inverse() {
+            Some(res)
+        }
+        else {
+            None
+        }
     }
-    else {
-        None
-    }
-  }
 
-  #[inline]
-  fn inplace_inverse(&mut self) -> bool {
-    if self.m11.is_zero() {
-        false
+    #[inline]
+    fn inplace_inverse(&mut self) -> bool {
+        if self.m11.is_zero() {
+            false
+        }
+        else {
+            self.m11 = One::one::<N>() / self.m11;
+            true
+        }
     }
-    else {
-      self.m11 = One::one::<N>() / self.m11;
-      true
-    }
-  }
 }
 
 impl<N: DivisionRing + Clone>
 Inv for Mat2<N> {
-  #[inline]
-  fn inverse(&self) -> Option<Mat2<N>> {
-    let mut res : Mat2<N> = self.clone();
+    #[inline]
+    fn inverse(&self) -> Option<Mat2<N>> {
+        let mut res : Mat2<N> = self.clone();
 
-    if res.inplace_inverse() {
-        Some(res)
+        if res.inplace_inverse() {
+            Some(res)
+        }
+        else {
+            None
+        }
     }
-    else {
-        None
-    }
-  }
 
-  #[inline]
-  fn inplace_inverse(&mut self) -> bool {
-    let det = self.m11 * self.m22 - self.m21 * self.m12;
+    #[inline]
+    fn inplace_inverse(&mut self) -> bool {
+        let det = self.m11 * self.m22 - self.m21 * self.m12;
 
-    if det.is_zero() {
-        false
-    }
-    else {
-      *self = Mat2::new(self.m22 / det , -self.m12 / det,
-                        -self.m21 / det, self.m11 / det);
+        if det.is_zero() {
+            false
+        }
+        else {
+            *self = Mat2::new(self.m22 / det , -self.m12 / det,
+            -self.m21 / det, self.m11 / det);
 
-      true
+            true
+        }
     }
-  }
 }
 
 impl<N: DivisionRing + Clone>
 Inv for Mat3<N> {
-  #[inline]
-  fn inverse(&self) -> Option<Mat3<N>> {
-    let mut res = self.clone();
+    #[inline]
+    fn inverse(&self) -> Option<Mat3<N>> {
+        let mut res = self.clone();
 
-    if res.inplace_inverse() {
-        Some(res)
+        if res.inplace_inverse() {
+            Some(res)
+        }
+        else {
+            None
+        }
     }
-    else {
-        None
+
+    #[inline]
+    fn inplace_inverse(&mut self) -> bool {
+        let minor_m12_m23 = self.m22 * self.m33 - self.m32 * self.m23;
+        let minor_m11_m23 = self.m21 * self.m33 - self.m31 * self.m23;
+        let minor_m11_m22 = self.m21 * self.m32 - self.m31 * self.m22;
+
+        let det = self.m11 * minor_m12_m23
+                  - self.m12 * minor_m11_m23
+                  + self.m13 * minor_m11_m22;
+
+        if det.is_zero() {
+            false
+        }
+        else {
+            *self = Mat3::new(
+                (minor_m12_m23  / det),
+                ((self.m13 * self.m32 - self.m33 * self.m12) / det),
+                ((self.m12 * self.m23 - self.m22 * self.m13) / det),
+
+                (-minor_m11_m23 / det),
+                ((self.m11 * self.m33 - self.m31 * self.m13) / det),
+                ((self.m13 * self.m21 - self.m23 * self.m11) / det),
+
+                (minor_m11_m22  / det),
+                ((self.m12 * self.m31 - self.m32 * self.m11) / det),
+                ((self.m11 * self.m22 - self.m21 * self.m12) / det)
+                );
+
+            true
+        }
     }
-  }
-
-  #[inline]
-  fn inplace_inverse(&mut self) -> bool {
-    let minor_m12_m23 = self.m22 * self.m33 - self.m32 * self.m23;
-    let minor_m11_m23 = self.m21 * self.m33 - self.m31 * self.m23;
-    let minor_m11_m22 = self.m21 * self.m32 - self.m31 * self.m22;
-
-    let det = self.m11 * minor_m12_m23
-              - self.m12 * minor_m11_m23
-              + self.m13 * minor_m11_m22;
-
-    if det.is_zero() {
-        false
-    }
-    else {
-      *self = Mat3::new(
-        (minor_m12_m23  / det),
-        ((self.m13 * self.m32 - self.m33 * self.m12) / det),
-        ((self.m12 * self.m23 - self.m22 * self.m13) / det),
-
-        (-minor_m11_m23 / det),
-        ((self.m11 * self.m33 - self.m31 * self.m13) / det),
-        ((self.m13 * self.m21 - self.m23 * self.m11) / det),
-
-        (minor_m11_m22  / det),
-        ((self.m12 * self.m31 - self.m32 * self.m11) / det),
-        ((self.m11 * self.m22 - self.m21 * self.m12) / det)
-      );
-
-      true
-    }
-  }
 }