diff --git a/src/meshlab/shaders/envmap.vert b/src/meshlab/shaders/envmap.vert
index e608c84fa..670df7da9 100644
--- a/src/meshlab/shaders/envmap.vert
+++ b/src/meshlab/shaders/envmap.vert
@@ -66,7 +66,7 @@ vec4 Specular;
        //             Diffuse  * gl_FrontMaterial.diffuse;
                     Ambient  * gl_Color +
                     Diffuse  * gl_Color;
-        color += Specular * vec4(SpecularVal,SpecularVal,SpecularVal,1);
+        color += Specular * vec4(SpecularVal,SpecularVal,SpecularVal,1.0);
         color = clamp( color, 0.0, 1.0 );
         gl_FrontColor = color;
         gl_FrontColor.a *= alphaFade;
diff --git a/src/meshlab/shaders/stripes2.frag b/src/meshlab/shaders/stripes2.frag
index a613941f4..ab22010c4 100644
--- a/src/meshlab/shaders/stripes2.frag
+++ b/src/meshlab/shaders/stripes2.frag
@@ -1,20 +1,20 @@
 varying vec3 pos;
 uniform vec3 StripeDir;
 uniform float Fuzz=.1;
-uniform float Width=0.5;
-uniform float Scale=1.0;
+float Width=0.5f;
+float Scale=1.0f;
 void main (void) 
 {
         vec4 color;
         float scalar_pos=dot(Scale*StripeDir,pos);
-        float scaled_pos=fract(scalar_pos*10.0)	;
+        float scaled_pos=fract(scalar_pos*10.0);
         color = gl_Color;
         	
         float frac1 = clamp(scaled_pos / Fuzz, 0.0, 1.0);
         float frac2 = clamp((scaled_pos - Width) / Fuzz, 0.0, 1.0);
 
-		frac1 = frac1 * (1.0 - frac2);
-    	frac1 = frac1 * frac1 * (3.0 - (2.0 * frac1));
+	  frac1 = frac1 * (1.0 - frac2);
+    	  frac1 = frac1 * frac1 * (3.0 - (2.0 * frac1));
            
         color.a=mix(0,1,frac1);
         gl_FragColor = color;
diff --git a/src/meshlab/shaders/toon.frag b/src/meshlab/shaders/toon.frag
index 85cf03954..473681aac 100644
--- a/src/meshlab/shaders/toon.frag
+++ b/src/meshlab/shaders/toon.frag
@@ -14,7 +14,7 @@ uniform float Edge;
 uniform float Phong;
 varying vec3 Normal;
 varying vec3 LightDir;
-uniform float Fuzz=.1;
+float Fuzz=0.1f;
 
 void main (void)
 {