diff --git a/fuzzers/CMakeLists.txt b/fuzzers/CMakeLists.txt
index ea0612322..1c03aa980 100644
--- a/fuzzers/CMakeLists.txt
+++ b/fuzzers/CMakeLists.txt
@@ -1,5 +1,6 @@
 LINK_DIRECTORIES(${LIBGIT2_LIBDIRS})
 INCLUDE_DIRECTORIES(${LIBGIT2_INCLUDES})
+INCLUDE_DIRECTORIES(SYSTEM ${LIBGIT2_SYSTEM_INCLUDES})
 
 IF(BUILD_FUZZERS AND NOT USE_STANDALONE_FUZZERS)
 	ADD_C_FLAG(-fsanitize=fuzzer)