diff --git a/spec/journald_native_spec.rb b/spec/journald_native_spec.rb
index 6f6b111..1b61409 100644
--- a/spec/journald_native_spec.rb
+++ b/spec/journald_native_spec.rb
@@ -4,40 +4,68 @@ require_relative 'spec_helper'
 
 RSpec.describe Journald::Native do
   describe 'sends log entries' do
-    it 'calls send()' do
+    it 'calls sd_journal_send()' do
+      # long function name
       expect(
-          Journald::Native.send(
-              "PRIORITY=#{Journald::LOG_DEBUG}",
-              'MESSAGE=test send()',
-              'SOMEFIELD=some value'
-          )
+        Journald::Native.sd_journal_send(
+          "PRIORITY=#{Journald::LOG_DEBUG}",
+          'MESSAGE=test send()',
+          'SOMEFIELD=some value'
+        )
+      ).to eq(0)
+
+      # short function name
+      expect(
+        Journald::Native.send(
+          "PRIORITY=#{Journald::LOG_DEBUG}",
+          'MESSAGE=test send()',
+          'SOMEFIELD=some value'
+        )
       ).to eq(0)
     end
 
-    it 'calls print()' do
-      expect(Journald::Native.print Journald::LOG_DEBUG, 'test print()').to eq(0)
+    it 'calls sd_journal_print()' do
+      # long function name
+      expect(
+        Journald::Native.sd_journal_print(Journald::LOG_DEBUG, 'test print()')
+      ).to eq(0)
+
+      # short function name
+      expect(
+        Journald::Native.print(Journald::LOG_DEBUG, 'test print()')
+      ).to eq(0)
     end
 
-    it 'calls perror()' do
-      expect(Journald::Native.perror 'test perror()').to eq(0)
+    it 'calls sd_journal_perror()' do
+      # long function name
+      expect(Journald::Native.sd_journal_perror('test perror()')).to eq(0)
+      # short function name
+      expect(Journald::Native.perror('test perror()')).to eq(0)
     end
 
     it 'calls send() with \0 symbol' do
       expect(
-          Journald::Native.send(
-              "PRIORITY=#{Journald::LOG_DEBUG}",
-              "MESSAGE=test\0send() with zero",
-              "SOMEFIELD=some value\0with zero"
-          )
+        Journald::Native.sd_journal_send(
+          "PRIORITY=#{Journald::LOG_DEBUG}",
+          "MESSAGE=test\0sd_journal_send() with zero",
+          "SOMEFIELD=some value\0with zero"
+        )
       ).to eq(0)
     end
 
     it 'fails on print() with \0 symbol' do
-      expect{ Journald::Native.print Journald::LOG_DEBUG, "test print()\0with zero" }.to raise_error(ArgumentError, 'string contains null byte')
+      expect do
+        Journald::Native.sd_journal_print(
+          Journald::LOG_DEBUG,
+          "test sd_journal_print()\0with zero"
+        )
+      end.to raise_error(ArgumentError, 'string contains null byte')
     end
 
     it 'fails on perror() with \0 symbol' do
-      expect{ Journald::Native.perror "test perror()\0with zero" }.to raise_error(ArgumentError, 'string contains null byte')
+      expect do
+        Journald::Native.sd_journal_perror "test perror()\0with zero"
+      end.to raise_error(ArgumentError, 'string contains null byte')
     end
   end
 end
diff --git a/spec/spec_helper.rb b/spec/spec_helper.rb
index 01f6f77..70190c3 100644
--- a/spec/spec_helper.rb
+++ b/spec/spec_helper.rb
@@ -1 +1 @@
-require_relative '../lib/journald/native'
+require 'journald/native'