diff --git a/README b/README
index ac015f199..a655c6113 100644
--- a/README
+++ b/README
@@ -34,3 +34,5 @@ BUILD_TUNNEL          0 (don't build tunnel), 1 (build tunnel) [requires a tunne
 BUILD_WEBRTC_AECM     0 (don't build echo canceler), 1 (build echo canceler)																 | 1
 USE_JAVAH             0 (don't generate header), 1 (generate header for linphone_core_jni) [used to check errors at liblinphone compilation] | 1
 BUILD_FOR_X86		  0 (don't generate liblinphone libraries for x86 architecture), 1 (build liblinphone libraries for x86 architecture)    | 1
+
+If you encounter troubles with the make clean target and you are using the 8e android ndk, the solution can be found here: https://groups.google.com/forum/?fromgroups=#!topic/android-ndk/3wIbb-h3nDU
diff --git a/tests/libs/robotium-solo-3.6-javadoc.jar b/tests/libs/robotium-solo-3.6-javadoc.jar
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index db4e75b2c..000000000
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diff --git a/tests/libs/robotium-solo-3.6.jar b/tests/libs/robotium-solo-3.6.jar
deleted file mode 100644
index 4280906d1..000000000
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diff --git a/tests/libs/robotium-solo-4.1-javadoc.jar b/tests/libs/robotium-solo-4.1-javadoc.jar
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index 000000000..24b84e6f9
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diff --git a/tests/libs/robotium-solo-4.1.jar b/tests/libs/robotium-solo-4.1.jar
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index 000000000..bc6270ea8
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