diff --git a/effects/demo_liquid.cpp b/effects/demo_liquid.cpp
index 766a1f7d7b..45f1d6e54d 100644
--- a/effects/demo_liquid.cpp
+++ b/effects/demo_liquid.cpp
@@ -38,6 +38,7 @@ bool LiquidEffect::loadData()
     // Create texture and render target
     mTexture = new GLTexture(displayWidth(), displayHeight());
     mTexture->setFilter(GL_LINEAR_MIPMAP_LINEAR);
+    mTexture->setWrapMode(GL_CLAMP);
 
     mRenderTarget = new GLRenderTarget(mTexture);
     if( !mRenderTarget->valid() )
diff --git a/lib/kwinglutils.cpp b/lib/kwinglutils.cpp
index bb8fa17ae0..0b79f4e094 100644
--- a/lib/kwinglutils.cpp
+++ b/lib/kwinglutils.cpp
@@ -401,6 +401,14 @@ void GLTexture::setFilter( GLenum filter )
     mFilter = filter;
     }
 
+void GLTexture::setWrapMode( GLenum mode )
+    {
+    bind();
+    glTexParameteri( mTarget, GL_TEXTURE_WRAP_S, mode );
+    glTexParameteri( mTarget, GL_TEXTURE_WRAP_T, mode );
+    unbind();
+    }
+
 void GLTexture::setDirty()
     {
     has_valid_mipmaps = false;
diff --git a/lib/kwinglutils.h b/lib/kwinglutils.h
index 46086f15c0..c383606e94 100644
--- a/lib/kwinglutils.h
+++ b/lib/kwinglutils.h
@@ -99,6 +99,7 @@ class KWIN_EXPORT GLTexture
         void setTexture( GLuint texture );
         void setTarget( GLenum target );
         void setFilter( GLenum filter );
+        void setWrapMode( GLenum mode );
         virtual void setDirty();
 
         static void initStatic();