diff --git a/lib/compress.js b/lib/compress.js
index fd17e2dc..bc9984ff 100644
--- a/lib/compress.js
+++ b/lib/compress.js
@@ -5034,8 +5034,8 @@ merge(Compressor.prototype, {
                 self = best_of(compressor, self, negated);
             }
             switch (self.operator) {
-              case "<": reverse(">"); break;
-              case "<=": reverse(">="); break;
+              case ">": reverse("<"); break;
+              case ">=": reverse("<="); break;
             }
         }
         if (self.operator == "+") {
diff --git a/test/compress/asm.js b/test/compress/asm.js
index ac91bd13..a9047c5d 100644
--- a/test/compress/asm.js
+++ b/test/compress/asm.js
@@ -91,7 +91,7 @@ asm_mixed: {
             function logSum(start, end) {
                 start |= 0, end |= 0;
                 var sum = 0, p = 0, q = 0;
-                for (p = start << 3, q = end << 3; (0 | q) > (0 | p); p = p + 8 | 0) sum += +log(values[p >> 3]);
+                for (p = start << 3, q = end << 3; (0 | p) < (0 | q); p = p + 8 | 0) sum += +log(values[p >> 3]);
                 return +sum;
             }
             function geometricMean(start, end) {
diff --git a/test/compress/collapse_vars.js b/test/compress/collapse_vars.js
index d4ab444e..244c90d4 100644
--- a/test/compress/collapse_vars.js
+++ b/test/compress/collapse_vars.js
@@ -913,15 +913,15 @@ collapse_vars_unary: {
             return delete x;
         }
         function f1(n) {
-            return n > +!!n
+            return +!!n < n;
         }
         function f2(n) {
             var k = 7;
-            return k--
+            return k--;
         }
         function f3(n) {
             var k = 7;
-            return ++k
+            return ++k;
         }
         function f4(n) {
             var k = 8 - n;
diff --git a/test/compress/comparing.js b/test/compress/comparing.js
index 5d743471..17b3ac47 100644
--- a/test/compress/comparing.js
+++ b/test/compress/comparing.js
@@ -11,10 +11,10 @@ comparisons: {
     }
     expect: {
         var obj1, obj2;
-        var result1 = obj2 >= obj1;
-        var result2 = obj2 >  obj1;
-        var result3 = obj1 >= obj2;
-        var result4 = obj1 >  obj2;
+        var result1 = obj1 <= obj2;
+        var result2 = obj1 <  obj2;
+        var result3 = obj2 <= obj1;
+        var result4 = obj2 <  obj1;
     }
 }
 
@@ -33,10 +33,10 @@ unsafe_comps: {
     }
     expect: {
         var obj1, obj2;
-        obj1 >  obj2 ? g1() : f1();
-        obj2 >  obj1 ? f2() : g2();
-        obj2 >  obj1 ? g3() : f3();
-        obj1 >  obj2 ? f4() : g4();
+        obj2 <  obj1 ? g1() : f1();
+        obj1 <  obj2 ? f2() : g2();
+        obj1 <  obj2 ? g3() : f3();
+        obj2 <  obj1 ? f4() : g4();
     }
 }
 
diff --git a/test/compress/if_return.js b/test/compress/if_return.js
index 981b437f..9b18bf11 100644
--- a/test/compress/if_return.js
+++ b/test/compress/if_return.js
@@ -243,7 +243,7 @@ issue_1089: {
     expect: {
         function x() {
             var f = document.getElementById("fname");
-            if (f.files[0].size > 12345)
+            if (12345 < f.files[0].size)
                 return alert("alert"), f.focus(), !1;
         }
     }
diff --git a/test/compress/issue-1447.js b/test/compress/issue-1447.js
index 30a74c56..0a765685 100644
--- a/test/compress/issue-1447.js
+++ b/test/compress/issue-1447.js
@@ -40,6 +40,6 @@ conditional_false_stray_else_in_loop: {
             console.log(i);
         }
     }
-    expect_exact: "for(var i=1;4>=i;++i)if(!(2>=i))console.log(i);"
+    expect_exact: "for(var i=1;i<=4;++i)if(!(i<=2))console.log(i);"
     expect_stdout: true
 }