diff --git a/src/sago/SagoDataHolder.hpp b/src/sago/SagoDataHolder.hpp
index 4cc0185..3676cc9 100644
--- a/src/sago/SagoDataHolder.hpp
+++ b/src/sago/SagoDataHolder.hpp
@@ -81,7 +81,7 @@ public:
 	 * If the constructor without elements is used then invalidateAll(SDL_Renderer*) must be called before getTexturePtr
 	 */
 	SagoDataHolder();
-	SagoDataHolder(SDL_Renderer* renderer);
+	explicit SagoDataHolder(SDL_Renderer* renderer);
 	/**
 	 * Return a pointer to the given texture. The pointer is valid for the lifetime of SagoDataHolder object it was taken from or invalidateAll is called.
 	 * @param textureName Name of the texture
diff --git a/src/sago/SagoSpriteHolder.hpp b/src/sago/SagoSpriteHolder.hpp
index 2e88528..7e2924c 100644
--- a/src/sago/SagoSpriteHolder.hpp
+++ b/src/sago/SagoSpriteHolder.hpp
@@ -32,7 +32,7 @@ namespace sago {
 
 class SagoSpriteHolder {
 public:
-	SagoSpriteHolder(const SagoDataHolder &texHolder);
+	explicit SagoSpriteHolder(const SagoDataHolder &texHolder);
 	virtual ~SagoSpriteHolder();
 	void ReadSprites();
 	const sago::SagoSprite& GetSprite(const std::string &spritename) const;
diff --git a/src/sago/SagoTextField.cpp b/src/sago/SagoTextField.cpp
index 5f6fb78..5181277 100644
--- a/src/sago/SagoTextField.cpp
+++ b/src/sago/SagoTextField.cpp
@@ -24,7 +24,7 @@ SOFTWARE.
 
 #include "SagoTextField.hpp"
 #include <iostream>
-#include <SDL/SDL_ttf.h>
+#include <SDL_ttf.h>
 
 namespace sago {