diff --git a/lib/jerry.rb b/lib/jerry.rb
index ccb552c..33beeea 100644
--- a/lib/jerry.rb
+++ b/lib/jerry.rb
@@ -29,13 +29,13 @@ def initialize(*configs)
 
   # @param key what to provide
   # @return an insance of the sepcified key provided by one of the configs
-  # @raise [Jerry::InstanciationError] if can't instanciate key
+  # @raise [Jerry::InstantiationError] if can't instanciate key
   def [](key)
     config = @configs.find { |conf| conf.knows? key }
     if config
       config[key]
     else
-      fail Jerry::InstanciationError, "Can't find #{key} in any config"
+      fail Jerry::InstantiationError, "Can't find #{key} in any config"
     end
   end
 end
diff --git a/lib/jerry/config.rb b/lib/jerry/config.rb
index ddf7fec..b1f7d4e 100644
--- a/lib/jerry/config.rb
+++ b/lib/jerry/config.rb
@@ -47,11 +47,11 @@ def [](key)
       if provider
         provider.call @jerry, self
       else
-        fail InstanciationError,
+        fail InstantiationError,
              "Failed to instanciate #{key}. Can't find provider for it"
       end
     rescue RuntimeError
-      raise InstanciationError, "Provider for #{key} raised an error"
+      raise InstantiationError, "Provider for #{key} raised an error"
     end
 
     # @return true if this config can provide the given key, false otherwise
diff --git a/lib/jerry/errors.rb b/lib/jerry/errors.rb
index a1859be..aee2b36 100644
--- a/lib/jerry/errors.rb
+++ b/lib/jerry/errors.rb
@@ -12,5 +12,5 @@ def initialize(message = nil)
   end
 
   # Failed to instanciate a class
-  class InstanciationError < Jerry::Error; end
+  class InstantiationError < Jerry::Error; end
 end
diff --git a/spec/config_spec.rb b/spec/config_spec.rb
index f912933..a4d4d99 100644
--- a/spec/config_spec.rb
+++ b/spec/config_spec.rb
@@ -76,7 +76,7 @@
     end
 
     it 'should fail when provider is missing' do
-      expect { config[:not_there] }.to raise_error(Jerry::InstanciationError)
+      expect { config[:not_there] }.to raise_error(Jerry::InstantiationError)
     end
 
     it 'should wrap errors from the provider' do
@@ -86,7 +86,7 @@
       config_klass.providers[:failing] = provider
 
       expect { config[:failing] }
-        .to raise_error(Jerry::InstanciationError) do |e|
+        .to raise_error(Jerry::InstantiationError) do |e|
         expect(e.cause.message).to eq 'something blew up'
       end
     end
diff --git a/spec/jerry_spec.rb b/spec/jerry_spec.rb
index 40b4f31..3c6e9dd 100644
--- a/spec/jerry_spec.rb
+++ b/spec/jerry_spec.rb
@@ -78,7 +78,7 @@ def double_config(name, fields = {})
       configs = 3.times.map { double_config 'some config', knows?: false }
       jerry = Jerry.new(*configs)
 
-      expect { jerry[:not_there] }.to raise_error(Jerry::InstanciationError)
+      expect { jerry[:not_there] }.to raise_error(Jerry::InstantiationError)
     end
   end
 end