diff --git a/src/jomlib/makefile.cpp b/src/jomlib/makefile.cpp
index 720be01..a8e3dff 100644
--- a/src/jomlib/makefile.cpp
+++ b/src/jomlib/makefile.cpp
@@ -115,7 +115,9 @@ DescriptionBlock::DescriptionBlock(Makefile* mkfile)
 :   m_bFileExists(false),
     m_bVisitedByCycleCheck(false),
     m_canAddCommands(ACSUnknown),
-    m_pMakefile(mkfile)
+    m_pMakefile(mkfile),
+    m_parseDone(false),
+    m_ruleDone(false)
 {
 }
 
diff --git a/src/jomlib/makefile.h b/src/jomlib/makefile.h
index 4199b8a..140fc9c 100644
--- a/src/jomlib/makefile.h
+++ b/src/jomlib/makefile.h
@@ -104,6 +104,8 @@ public:
     bool m_bFileExists;
     bool m_bVisitedByCycleCheck;
     QVector<InferenceRule*> m_inferenceRules;
+    bool m_parseDone;
+    bool m_ruleDone;
 
     enum AddCommandsState { ACSUnknown, ACSEnabled, ACSDisabled };
     AddCommandsState m_canAddCommands;
diff --git a/src/jomlib/parser.cpp b/src/jomlib/parser.cpp
index b7b5353..7fb596d 100644
--- a/src/jomlib/parser.cpp
+++ b/src/jomlib/parser.cpp
@@ -637,6 +637,9 @@ void Parser::checkForCycles(DescriptionBlock* target)
     if (!target)
         return;
 
+    if (target->m_parseDone)
+        return;
+
     if (target->m_bVisitedByCycleCheck) {
         QString msg = QLatin1String("cycle in targets detected: %1");
         throw Exception(msg.arg(target->targetName()));
@@ -648,6 +651,7 @@ void Parser::checkForCycles(DescriptionBlock* target)
         checkForCycles(dep);
     }
     target->m_bVisitedByCycleCheck = false;
+    target->m_parseDone = true;
 }
 
 QVector<InferenceRule*> Parser::findRulesByTargetName(const QString& targetFilePath)
@@ -681,6 +685,8 @@ QVector<InferenceRule*> Parser::findRulesByTargetName(const QString& targetFileP
 
 void Parser::preselectInferenceRules(DescriptionBlock *target)
 {
+    if (target->m_ruleDone)
+        return;
     if (target->m_commands.isEmpty()) {
         QVector<InferenceRule *> rules = findRulesByTargetName(target->targetName());
         if (!rules.isEmpty())
@@ -700,6 +706,7 @@ void Parser::preselectInferenceRules(DescriptionBlock *target)
             }
         }
     }
+    target->m_ruleDone = true;
 }
 
 void Parser::error(const QString& msg)