diff --git a/arch/arm/src/stm32/stm32_bbsram.c b/arch/arm/src/stm32/stm32_bbsram.c
index 09a2300bad6..5fdbc5bbfa9 100644
--- a/arch/arm/src/stm32/stm32_bbsram.c
+++ b/arch/arm/src/stm32/stm32_bbsram.c
@@ -266,7 +266,7 @@ static inline void stm32_bbsram_unlock(void)
  *
  ****************************************************************************/
 
-static inline void  stm32_bbsram_lock(void)
+static inline void stm32_bbsram_lock(void)
 {
   (void)stm32_pwr_enablebkp(false);
 }
diff --git a/libxx/libxx_cxapurevirtual.cxx b/libxx/libxx_cxapurevirtual.cxx
index 653793ec4e3..97977d933a3 100644
--- a/libxx/libxx_cxapurevirtual.cxx
+++ b/libxx/libxx_cxapurevirtual.cxx
@@ -40,7 +40,7 @@
 #include <cassert>
 
 //***************************************************************************
-// Definitions
+// Pre-processor Definitions
 //***************************************************************************
 
 //***************************************************************************
diff --git a/libxx/libxx_delete.cxx b/libxx/libxx_delete.cxx
index 4de6f338a8f..9eb46a0100f 100644
--- a/libxx/libxx_delete.cxx
+++ b/libxx/libxx_delete.cxx
@@ -42,7 +42,7 @@
 #include "libxx_internal.hxx"
 
 //***************************************************************************
-// Definitions
+// Pre-processor Definitions
 //***************************************************************************
 
 //***************************************************************************
diff --git a/libxx/libxx_deletea.cxx b/libxx/libxx_deletea.cxx
index a25a6071772..c99c18dfde2 100644
--- a/libxx/libxx_deletea.cxx
+++ b/libxx/libxx_deletea.cxx
@@ -42,7 +42,7 @@
 #include "libxx_internal.hxx"
 
 //***************************************************************************
-// Definitions
+// Pre-processor Definitions
 //***************************************************************************
 
 //***************************************************************************
diff --git a/libxx/libxx_new.cxx b/libxx/libxx_new.cxx
index 3158e860597..710528abe35 100644
--- a/libxx/libxx_new.cxx
+++ b/libxx/libxx_new.cxx
@@ -44,7 +44,7 @@
 #include "libxx_internal.hxx"
 
 //***************************************************************************
-// Definitions
+// Pre-processor Definitions
 //***************************************************************************
 
 //***************************************************************************
diff --git a/libxx/libxx_newa.cxx b/libxx/libxx_newa.cxx
index b5b28035686..8d42c628c79 100644
--- a/libxx/libxx_newa.cxx
+++ b/libxx/libxx_newa.cxx
@@ -44,7 +44,7 @@
 #include "libxx_internal.hxx"
 
 //***************************************************************************
-// Definitions
+// Pre-processor Definitions
 //***************************************************************************
 
 //***************************************************************************
diff --git a/libxx/libxx_stdthrow.cxx b/libxx/libxx_stdthrow.cxx
index 29cf5d5e978..79f20093a48 100644
--- a/libxx/libxx_stdthrow.cxx
+++ b/libxx/libxx_stdthrow.cxx
@@ -41,7 +41,7 @@
 #include <debug.h>
 
 //***************************************************************************
-// Definitions
+// Pre-processor Definitions
 //***************************************************************************
 
 //***************************************************************************