diff --git a/src/PlatformUtils-posix.cc b/src/PlatformUtils-posix.cc
index d7b7b6d6..d2b87927 100644
--- a/src/PlatformUtils-posix.cc
+++ b/src/PlatformUtils-posix.cc
@@ -3,8 +3,13 @@
 
 std::string PlatformUtils::documentsPath()
 {
-	fs::path docpath(getenv("HOME"));
-	docpath = docpath / ".local" / "share";
-
-	return boosty::stringy(docpath);
+	const char *home = getenv("HOME");
+	if (home) {
+		fs::path docpath(home);
+		docpath = docpath / ".local" / "share";
+		return boosty::stringy(docpath);
+	}
+	else {
+		return "";
+	}
 }
diff --git a/src/primitives.cc b/src/primitives.cc
index 45ea7d8e..0c2bfd52 100644
--- a/src/primitives.cc
+++ b/src/primitives.cc
@@ -40,6 +40,8 @@
 #include <boost/foreach.hpp>
 #include <boost/assign/std/vector.hpp>
 using namespace boost::assign; // bring 'operator+=()' into scope
+
+#include <boost/math/special_functions/fpclassify.hpp>
 using boost::math::isinf;
 
 #define F_MINIMUM 0.01