diff --git a/Source/cmDocumentGeneratorExpressions.h b/Source/cmDocumentGeneratorExpressions.h
index a8b3847d7b..12ee9faf0b 100644
--- a/Source/cmDocumentGeneratorExpressions.h
+++ b/Source/cmDocumentGeneratorExpressions.h
@@ -44,9 +44,9 @@
   "used.\n"                                                             \
   "  $<C_COMPILER_ID:comp>     = '1' if the CMake-id of the C "         \
   "compiler matches comp, otherwise '0'.\n"                             \
-  "  $<CXX_COMPILER_ID>          = The CMake-id of the CXX compiler "   \
+  "  $<CXX_COMPILER_ID>        = The CMake-id of the CXX compiler "     \
   "used.\n"                                                             \
-  "  $<CXX_COMPILER_ID:comp>     = '1' if the CMake-id of the CXX "     \
+  "  $<CXX_COMPILER_ID:comp>   = '1' if the CMake-id of the CXX "       \
   "compiler matches comp, otherwise '0'.\n"                             \
   "  $<TARGET_FILE:tgt>        = main file (.exe, .so.1.2, .a)\n"       \
   "  $<TARGET_LINKER_FILE:tgt> = file used to link (.a, .lib, .so)\n"   \