diff --git a/lib/resources/gem.rb b/lib/resources/gem.rb
index f6b7982f3..45d3e4abe 100644
--- a/lib/resources/gem.rb
+++ b/lib/resources/gem.rb
@@ -31,7 +31,7 @@ class GemPackage < Vulcano.resource(1)
   end
 
   def installed?
-    info[:installed]
+    info[:installed] == true
   end
 
   def version
diff --git a/lib/resources/npm.rb b/lib/resources/npm.rb
index a11742b9d..c01988e57 100644
--- a/lib/resources/npm.rb
+++ b/lib/resources/npm.rb
@@ -29,7 +29,7 @@ class NpmPackage < Vulcano.resource(1)
   end
 
   def installed?
-    info[:installed]
+    info[:installed] == true
   end
 
   def version
diff --git a/lib/resources/oneget.rb b/lib/resources/oneget.rb
index 9eaba083e..04668cb71 100644
--- a/lib/resources/oneget.rb
+++ b/lib/resources/oneget.rb
@@ -38,7 +38,7 @@ class OneGetPackage < Vulcano.resource(1)
   end
 
   def installed?
-    info[:installed]
+    info[:installed] == true
   end
 
   def version
diff --git a/lib/resources/pip.rb b/lib/resources/pip.rb
index 0220a55a3..44c576acc 100644
--- a/lib/resources/pip.rb
+++ b/lib/resources/pip.rb
@@ -32,7 +32,7 @@ class PipPackage < Vulcano.resource(1)
   end
 
   def installed?
-    info[:installed]
+    info[:installed] == true
   end
 
   def version