diff --git a/src/BufferedImage.h b/src/BufferedImage.h
index 1ecc8a5e4..d7691f077 100644
--- a/src/BufferedImage.h
+++ b/src/BufferedImage.h
@@ -50,7 +50,7 @@ template<size_t imageDimensions> class BufferedImage: public AbstractImage {
         BufferedImage(Components components, ComponentType type): AbstractImage(components, type), _buffer(Buffer::Target::PixelPack) {}
 
         /** @brief %Image dimensions */
-        inline Math::Vector<Dimensions, GLsizei> dimensions() const { return _dimensions; }
+        inline constexpr Math::Vector<Dimensions, GLsizei> dimensions() const { return _dimensions; }
 
         /**
          * @brief Data
diff --git a/src/Image.h b/src/Image.h
index b80bff16b..c32fb163b 100644
--- a/src/Image.h
+++ b/src/Image.h
@@ -77,10 +77,10 @@ template<size_t imageDimensions> class Image: public AbstractImage {
         inline ~Image() { delete[] _data; }
 
         /** @brief %Image dimensions */
-        inline const Math::Vector<Dimensions, GLsizei>& dimensions() const { return _dimensions; }
+        inline constexpr const Math::Vector<Dimensions, GLsizei>& dimensions() const { return _dimensions; }
 
         /** @brief Pointer to raw data */
-        inline const void* data() const { return _data; }
+        inline constexpr const void* data() const { return _data; }
 
         /**
          * @brief Set image data
diff --git a/src/Texture.h b/src/Texture.h
index af22d29fc..60d9c6ade 100644
--- a/src/Texture.h
+++ b/src/Texture.h
@@ -103,7 +103,7 @@ template<size_t textureDimensions> class Texture: public AbstractTexture {
         inline Texture(GLint layer = 0, Target target = DataHelper<Dimensions>::target()): AbstractTexture(layer, static_cast<GLenum>(target)) {}
 
         /** @brief %Texture target */
-        inline Target target() const { return static_cast<Target>(_target); }
+        inline constexpr Target target() const { return static_cast<Target>(_target); }
 
         /**
          * @brief Set wrapping
diff --git a/src/Trade/ImageData.h b/src/Trade/ImageData.h
index 96f100694..a8e8a525a 100644
--- a/src/Trade/ImageData.h
+++ b/src/Trade/ImageData.h
@@ -62,10 +62,10 @@ template<size_t imageDimensions> class ImageData: public AbstractImage {
         inline ~ImageData() { delete[] _data; }
 
         /** @brief %Image dimensions */
-        inline const Math::Vector<Dimensions, GLsizei>& dimensions() const { return _dimensions; }
+        inline constexpr const Math::Vector<Dimensions, GLsizei>& dimensions() const { return _dimensions; }
 
         /** @brief Pointer to raw data */
-        inline const void* data() const { return _data; }
+        inline constexpr const void* data() const { return _data; }
 
     private:
         Math::Vector<Dimensions, GLsizei> _dimensions;