diff --git a/.travis.yml b/.travis.yml
index f087241..c371759 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -394,7 +394,9 @@ install:
 script:
   - |-
     echo "using $TOOLSET : : $COMPILER ;" > ~/user-config.jam
-  - ./b2 -j 3 libs/preprocessor/test toolset=$TOOLSET cxxstd=$CXXSTD $PPLIMITS
+  - cd libs/preprocessor/test
+  - ../../../b2 -j 3 toolset=$TOOLSET cxxstd=$CXXSTD $PPLIMITS
+  - cd ../../..
 
 notifications:
   email:
diff --git a/appveyor.yml b/appveyor.yml
index 9b3ee9f..78cbac6 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -84,7 +84,9 @@ for:
     - if not "%CXXSTD%" == "" set CXXSTD=cxxstd=%CXXSTD%
     - if not "%ADDRMD%" == "" set ADDRMD=address-model=%ADDRMD%
     - if not "%PREPROCESSOR%" == "" set PREPROCESSOR=cflags="%PREPROCESSOR%"
-    - b2 -j3 libs/preprocessor/test toolset=%TOOLSET% %CXXSTD% %ADDRMD% %PREPROCESSOR% variant=debug,release %PPLIMITS%
+    - cd libs/preprocessor/test
+    - ../../../b2 -j3 toolset=%TOOLSET% %CXXSTD% %ADDRMD% %PREPROCESSOR% variant=debug,release %PPLIMITS%
+    - cd ../../..
 
 -
   matrix: