diff --git a/p2.c b/p2.c
index f3bd99d..289a510 100644
--- a/p2.c
+++ b/p2.c
@@ -10,22 +10,22 @@
 #include <stdio.h>
 
 int main() {
-	
-	int a = 1, b = 1, r = 0;
-		
-	for(;;) {
-		
-		int c = a + b;
-		a = b;
-		b = c;
 
-		if (~c & 1)
-			r += c;
+    int a = 1, b = 1, r = 0;
+
+    for(;;) {
+
+        int c = a + b;
+        a = b;
+        b = c;
+
+        if (~c & 1)
+            r += c;
         if (c >= 4000000)
             break;
-	}
-		
-	printf("%i\n", r);
+    }
 
-	return 0;
+    printf("%i\n", r);
+
+    return 0;
 }
diff --git a/p25.c b/p25.c
index 28848ce..c35d4ef 100644
--- a/p25.c
+++ b/p25.c
@@ -15,7 +15,7 @@
 #define LOG10PHI 0.20898764024997876221 /* log10((1+sqrt(5))/2) */
 #define MAGIC    0.65051499783199062676 /* |(log10(5) / 2) - 1| */
 
-#define fibolen(n) ((int) ceil(((n) - MAGIC) / LOG10PHI))
+#define fibolen(n) ((unsigned int) ceil(((n) - MAGIC) / LOG10PHI))
 
 int main() {
     
diff --git a/p3.c b/p3.c
index 1b4fe00..87b25d1 100644
--- a/p3.c
+++ b/p3.c
@@ -30,7 +30,7 @@ int main() {
 	
 	bint i, r = 0, n = 600851475143;
 	
-	for(i=2; i <= n ; i++) {
+	for(i=2; i <= n; i++) {
 		
 		if((r = gcd(n, i)) == 1)
 			continue;