diff --git a/doc/doxygen/information.txt b/doc/doxygen/information.txt
index 792fca7..b331abd 100644
--- a/doc/doxygen/information.txt
+++ b/doc/doxygen/information.txt
@@ -40,7 +40,7 @@ greatly expanded the synthesis techniques available.  With the help of
 Bill Putnam, Perry also made a port of STK to Windows95.  Gary Scavone
 began using STK extensively in the summer of 1997 and completed a full
 port of STK to Linux early in 1998. He finished the fully compatable
-Windows port (using Direct Sound API) in June 1998.  Numerous
+Windows port (using DirectSound API) in June 1998.  Numerous
 improvements and extensions have been made since then.
 
 The Toolkit has been distributed continuously since 1996 via the <A
diff --git a/doc/doxygen/usage.txt b/doc/doxygen/usage.txt
index 649960a..74004ea 100644
--- a/doc/doxygen/usage.txt
+++ b/doc/doxygen/usage.txt
@@ -59,7 +59,7 @@ Several options can be supplied to the <TT>configure</TT> script to customize th
 <LI><TT>--with-jack</TT> to choose native JACK API support (linux and Macintosh OS-X)</LI>
 <LI><TT>--with-core</TT> to choose CoreAudio API support (Macintosh OS-X)</LI>
 <LI><TT>--with-asio</TT> to choose ASIO Audio API support (Windows)</LI>
-<LI><TT>--with-ds</TT> to choose Windows Direct Sound Audio API support (Windows)</LI>
+<LI><TT>--with-ds</TT> to choose Windows DirectSound Audio API support (Windows)</LI>
 </UL>
 <P>
 Note that it is possible to specify as many of the "--with-" options as desired to compile multi-API support.  In addition, it is possible to specify the location of the STK rawwaves and the STK include path as follows:
diff --git a/include/RtAudio.h b/include/RtAudio.h
index 5e072cd..47d4214 100644
--- a/include/RtAudio.h
+++ b/include/RtAudio.h
@@ -102,7 +102,7 @@ static const RtAudioFormat RTAUDIO_FLOAT64 = 0x20; // Normalized between plus/mi
     Certain audio APIs offer a number of parameters that influence the
     I/O latency of a stream.  By default, RtAudio will attempt to set
     these parameters internally for robust (glitch-free) performance
-    (though some APIs, like Windows Direct Sound, make this difficult).
+    (though some APIs, like Windows DirectSound, make this difficult).
     By passing the RTAUDIO_MINIMIZE_LATENCY flag to the openStream()
     function, internal stream settings will be influenced in an attempt
     to minimize stream latency, though possibly at the expense of stream
@@ -274,7 +274,7 @@ class RtAudio
     MACOSX_CORE,    /*!< Macintosh OS-X CoreAudio API. */
     WINDOWS_WASAPI, /*!< The Microsoft WASAPI API. */
     WINDOWS_ASIO,   /*!< The Steinberg Audio Stream I/O API. */
-    WINDOWS_DS,     /*!< The Microsoft Direct Sound API. */
+    WINDOWS_DS,     /*!< The Microsoft DirectSound API. */
     RTAUDIO_DUMMY   /*!< A compilable but non-functional API. */
   };
 
@@ -333,7 +333,7 @@ class RtAudio
     Certain audio APIs offer a number of parameters that influence the
     I/O latency of a stream.  By default, RtAudio will attempt to set
     these parameters internally for robust (glitch-free) performance
-    (though some APIs, like Windows Direct Sound, make this difficult).
+    (though some APIs, like Windows DirectSound, make this difficult).
     By passing the RTAUDIO_MINIMIZE_LATENCY flag to the openStream()
     function, internal stream settings will be influenced in an attempt
     to minimize stream latency, though possibly at the expense of stream
diff --git a/projects/examples/audioprobe.cpp b/projects/examples/audioprobe.cpp
index 1ece884..ece84ac 100644
--- a/projects/examples/audioprobe.cpp
+++ b/projects/examples/audioprobe.cpp
@@ -17,7 +17,7 @@ int main()
   std::map<int, std::string> apiMap;
   apiMap[RtAudio::MACOSX_CORE] = "OS-X CoreAudio";
   apiMap[RtAudio::WINDOWS_ASIO] = "Windows ASIO";
-  apiMap[RtAudio::WINDOWS_DS] = "Windows Direct Sound";
+  apiMap[RtAudio::WINDOWS_DS] = "Windows DirectSound";
   apiMap[RtAudio::UNIX_JACK] = "Jack Client";
   apiMap[RtAudio::LINUX_ALSA] = "Linux ALSA";
   apiMap[RtAudio::LINUX_OSS] = "Linux OSS";