diff --git a/src/Magnum/Shaders/DistanceFieldVector.h b/src/Magnum/Shaders/DistanceFieldVector.h
index 3b9298fff..96cad22c3 100644
--- a/src/Magnum/Shaders/DistanceFieldVector.h
+++ b/src/Magnum/Shaders/DistanceFieldVector.h
@@ -93,7 +93,7 @@ mesh.draw(shader);
 */
 template<UnsignedInt dimensions> class MAGNUM_SHADERS_EXPORT DistanceFieldVector: public AbstractVector<dimensions> {
     public:
-        DistanceFieldVector();
+        explicit DistanceFieldVector();
 
         /**
          * @brief Set transformation and projection matrix
diff --git a/src/Magnum/Shaders/Vector.h b/src/Magnum/Shaders/Vector.h
index fb511bc79..77247dd02 100644
--- a/src/Magnum/Shaders/Vector.h
+++ b/src/Magnum/Shaders/Vector.h
@@ -87,7 +87,7 @@ mesh.draw(shader);
 */
 template<UnsignedInt dimensions> class MAGNUM_SHADERS_EXPORT Vector: public AbstractVector<dimensions> {
     public:
-        Vector();
+        explicit Vector();
 
         /**
          * @brief Set transformation and projection matrix