diff --git a/include/Nazara/Graphics/ParticleGroup.hpp b/include/Nazara/Graphics/ParticleGroup.hpp
index aaa65bb7f..412b94511 100644
--- a/include/Nazara/Graphics/ParticleGroup.hpp
+++ b/include/Nazara/Graphics/ParticleGroup.hpp
@@ -40,19 +40,14 @@ namespace Nz
 			void* CreateParticle();
 			void* CreateParticles(unsigned int count);
 
-			void EnableFixedStep(bool fixedStep);
-
 			void* GenerateParticle();
 			void* GenerateParticles(unsigned int count);
 
 			const ParticleDeclarationConstRef& GetDeclaration() const;
-			float GetFixedStepSize() const;
 			unsigned int GetMaxParticleCount() const;
 			unsigned int GetParticleCount() const;
 			unsigned int GetParticleSize() const;
 
-			bool IsFixedStepEnabled() const;
-
 			void KillParticle(unsigned int index);
 			void KillParticles();
 
@@ -60,7 +55,6 @@ namespace Nz
 			void RemoveEmitter(ParticleEmitter* emitter);
 			void RemoveGenerator(ParticleGenerator* generator);
 
-			void SetFixedStepSize(float stepSize);
 			void SetRenderer(ParticleRenderer* renderer);
 
 			void Update(float elapsedTime);
@@ -79,10 +73,7 @@ namespace Nz
 			std::vector<ParticleGeneratorRef> m_generators;
 			ParticleDeclarationConstRef m_declaration;
 			ParticleRendererRef m_renderer;
-			bool m_fixedStepEnabled;
 			bool m_processing;
-			float m_stepAccumulator;
-			float m_stepSize;
 			unsigned int m_maxParticleCount;
 			unsigned int m_particleCount;
 			unsigned int m_particleSize;
diff --git a/src/Nazara/Graphics/ParticleGroup.cpp b/src/Nazara/Graphics/ParticleGroup.cpp
index 08fb03f39..d93c085db 100644
--- a/src/Nazara/Graphics/ParticleGroup.cpp
+++ b/src/Nazara/Graphics/ParticleGroup.cpp
@@ -154,7 +154,6 @@ namespace Nz
 	* \param particleCount Number of particles
 	* \param elapsedTime Delta time between the previous frame
 	*/
-
 	void ParticleGroup::ApplyControllers(ParticleMapper& mapper, unsigned int particleCount, float elapsedTime)
 	{
 		m_processing = true;
@@ -174,8 +173,8 @@ namespace Nz
 		if (m_dyingParticles.size() < m_particleCount)
 		{
 			// We kill them in reverse order, std::set sorting them via std::greater
-			// The reason is simple, as the death of a particle means the move of the last particle in the buffer,
-			// without this solution, certain particles could avoid the death
+			// The reason is simple, as the death of a particle means moving the last particle in the buffer,
+			// without this solution, certain particles could avoid death
 			for (unsigned int index : m_dyingParticles)
 				KillParticle(index);
 		}
@@ -252,16 +251,6 @@ namespace Nz
 		return m_declaration;
 	}
 
-	/*!
-	* \brief Gets the fixed step size
-	* \return Current fixed step size
-	*/
-
-	float ParticleGroup::GetFixedStepSize() const
-	{
-		return m_stepSize;
-	}
-
 	/*!
 	* \brief Gets the maximum number of particles
 	* \return Current maximum number
@@ -292,16 +281,6 @@ namespace Nz
 		return m_particleSize;
 	}
 
-	/*!
-	* \brief Checks whether the fixed step is enabled
-	* \return true If it is the case
-	*/
-
-	bool ParticleGroup::IsFixedStepEnabled() const
-	{
-		return m_fixedStepEnabled;
-	}
-
 	/*!
 	* \brief Kills one particle
 	*
@@ -372,17 +351,6 @@ namespace Nz
 			m_generators.erase(it);
 	}
 
-	/*!
-	* \brief Sets the fixed step size
-	*
-	* \param stepSize Fixed step size
-	*/
-
-	void ParticleGroup::SetFixedStepSize(float stepSize)
-	{
-		m_stepSize = stepSize;
-	}
-
 	/*!
 	* \brief Sets the renderer of the particles
 	*
@@ -448,12 +416,10 @@ namespace Nz
 		m_particleCount = system.m_particleCount;
 		m_particleSize = system.m_particleSize;
 		m_renderer = system.m_renderer;
-		m_stepSize = system.m_stepSize;
 
 		// The copy can not (or should not) happen during the update, there is no use to copy
 		m_dyingParticles.clear();
 		m_processing = false;
-		m_stepAccumulator = 0.f;
 
 		m_buffer.clear(); // To avoid a copy due to resize() which will be pointless
 		ResizeBuffer();