diff --git a/.make/build/afterBuild.php b/.make/build/afterBuild.php
index cecdaf9e9..e1ab17a1f 100644
--- a/.make/build/afterBuild.php
+++ b/.make/build/afterBuild.php
@@ -22,13 +22,13 @@ $iElapsed = time() - $iBeginTime;
 
 if (count($aFailedCommands))
 {
-	fwrite(STDERR, "\nafterBuild execution failed! (in ${iElapsed}s)\n");
+	fwrite(STDERR, "\nafterBuild execution failed! (in {$iElapsed}s)\n");
 	fwrite(STDERR, "List of failling commands:\n - " . implode("\n - ", $aFailedCommands) . "\n");
 	exit(1);
 }
 
 
-echo "\nDone (${iElapsed}s)\n";
+echo "\nDone ({$iElapsed}s)\n";
 exit(0);
 
 /**
@@ -74,7 +74,7 @@ function ExecCommand($cmd) {
 	}
 	else
 	{
-		echo "| elapsed:${iElapsed}s \n";
+		echo "| elapsed:{$iElapsed}s \n";
 	}
 
 	if (!empty($stderr))
diff --git a/core/oql/build/PHP/ParserGenerator.php b/core/oql/build/PHP/ParserGenerator.php
index 4a6fa08a4..51cbf3c41 100644
--- a/core/oql/build/PHP/ParserGenerator.php
+++ b/core/oql/build/PHP/ParserGenerator.php
@@ -739,7 +739,7 @@ class PHP_ParserGenerator
             while (isset($errmsg[$restart]) && $errmsg[$restart] == ' ') {
                 $restart++;
             }
-            printf("%s%.${end}s\n", $prefix, $errmsg);
+            printf("%s%.{$end}s\n", $prefix, $errmsg);
             $errmsg = substr($errmsg, $restart);
         }
     }
@@ -771,7 +771,7 @@ class PHP_ParserGenerator
             for ($j = $i; $j < $this->nsymbol; $j += $skip) {
                 $sp = $this->symbols[$j];
                 //assert( sp->index==j );
-                printf(" %3d %-${maxlen}.${maxlen}s", $j, $sp->name);
+                printf(" %3d %-{$maxlen}.{$maxlen}s", $j, $sp->name);
             }
             print "\n";
         }
diff --git a/core/oql/build/PHP/ParserGenerator/Action.php b/core/oql/build/PHP/ParserGenerator/Action.php
index e0108890e..7f87d7740 100644
--- a/core/oql/build/PHP/ParserGenerator/Action.php
+++ b/core/oql/build/PHP/ParserGenerator/Action.php
@@ -231,19 +231,19 @@ class PHP_ParserGenerator_Action
         switch ($this->type)
         {
         case self::SHIFT:
-            fprintf($fp, "%${indent}s shift  %d", $this->sp->name, $this->x->statenum);
+            fprintf($fp, "%{$indent}s shift  %d", $this->sp->name, $this->x->statenum);
             break;
         case self::REDUCE:
-            fprintf($fp, "%${indent}s reduce %d", $this->sp->name, $this->x->index);
+            fprintf($fp, "%{$indent}s reduce %d", $this->sp->name, $this->x->index);
             break;
         case self::ACCEPT:
-            fprintf($fp, "%${indent}s accept", $this->sp->name);
+            fprintf($fp, "%{$indent}s accept", $this->sp->name);
             break;
         case self::ERROR:
-            fprintf($fp, "%${indent}s error", $this->sp->name);
+            fprintf($fp, "%{$indent}s error", $this->sp->name);
             break;
         case self::CONFLICT:
-            fprintf($fp, "%${indent}s reduce %-3d ** Parsing conflict **", $this->sp->name, $this->x->index);
+            fprintf($fp, "%{$indent}s reduce %-3d ** Parsing conflict **", $this->sp->name, $this->x->index);
             break;
         case self::SH_RESOLVED:
         case self::RD_RESOLVED: