diff --git a/.travis.yml b/.travis.yml
index 2e59c86..2b29dcb 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -195,9 +195,8 @@ jobs:
     - { os: "linux", env: [ "B2_TOOLSET=clang-6.0",   "B2_CXXSTD=14,17"    ], addons: *clang-6   }
     - { os: "linux", env: [ "B2_TOOLSET=clang-7",     "B2_CXXSTD=17"    ], addons: *clang-7   }
     - { os: "linux", env: [ "B2_TOOLSET=clang-8",     "B2_CXXSTD=17"    ], addons: *clang-8   }
-    - { 
-        os: "linux", 
-        env: ["COMMENT=STANDALONE", "B2_TOOLSET=clang-9", "B2_CXXST D=17", "B2_CXXFLAGS=-stdlib=libstdc++"], 
+    -   os: "linux"
+        env: ["COMMENT=STANDALONE", "B2_TOOLSET=clang-9", "B2_CXXST D=17", "B2_CXXFLAGS=-stdlib=libstdc++"]
         apt:
           sources:
             - ubuntu-toolchain-r-test
@@ -205,7 +204,6 @@ jobs:
               key_url: 'https://apt.llvm.org/llvm-snapshot.gpg.key'
         packages:
           - clang-9
-      }
 
     # libc++
     - { os: "linux", env: [ "B2_TOOLSET=clang-6.0",   "B2_CXXSTD=11,14",
@@ -257,9 +255,8 @@ jobs:
     - { os: "linux", env: [ "COMMENT=STANDALONE",       "B2_TOOLSET=clang-7",     "B2_DEFINES=define=BOOST_STATIC_STRING_STANDALONE",       "B2_CXXSTD=17"                                        ], addons: *clang-7   }
     - { os: "linux", env: [ "COMMENT=STANDALONE",       "B2_TOOLSET=clang-8",     "B2_DEFINES=define=BOOST_STATIC_STRING_STANDALONE",       "B2_CXXSTD=17"                                        ], addons: *clang-8   }
     - { os: "osx"  , env: [ "COMMENT=STANDALONE",       "B2_TOOLSET=clang",       "B2_DEFINES=define=BOOST_STATIC_STRING_STANDALONE",       "B2_CXXSTD=17"     ]                     }
-    - { 
-        os: "linux", 
-        env: ["COMMENT=STANDALONE", "B2_TOOLSET=clang-9", "B2_DEFINES=define=BOOST_STATIC_STRING_STANDALONE", "B2_CXXST D=17", "B2_CXXFLAGS=-stdlib=libstdc++"], 
+    -   os: "linux"
+        env: ["COMMENT=STANDALONE", "B2_TOOLSET=clang-9", "B2_DEFINES=define=BOOST_STATIC_STRING_STANDALONE", "B2_CXXST D=17", "B2_CXXFLAGS=-stdlib=libstdc++"]
         apt:
           sources:
             - ubuntu-toolchain-r-test
@@ -267,7 +264,6 @@ jobs:
               key_url: 'https://apt.llvm.org/llvm-snapshot.gpg.key'
         packages:
           - clang-9
-      }
 notifications:
   email:
     false