diff --git a/Makefile.am b/Makefile.am
index 4468ba71..7ac184b5 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -63,7 +63,7 @@ cppcheck:
 		--enable=warning,style,performance,portability,unusedFunction,missingInclude \
 		--inconclusive \
 		--template="warning: {file},{line},{severity},{id},{message}" \
-		-I headers -I . -I others -I src -I others/mbedtls/include \
+		-I headers -I . -I $(top_srcdir)/others -I $(top_srcdir)/src -I $(top_srcdir)/others/mbedtls/include \
 		--error-exitcode=1 \
 		-i "src/parser/seclang-parser.cc" -i "src/parser/seclang-scanner.cc" \
 		-i others \
diff --git a/others/Makefile.am b/others/Makefile.am
index 956c8d90..b102a033 100644
--- a/others/Makefile.am
+++ b/others/Makefile.am
@@ -28,6 +28,6 @@ libmbedtls_la_SOURCES = \
 	mbedtls/library/sha1.c \
 	mbedtls/library/platform_util.c
 
-libmbedtls_la_CFLAGS = -DMBEDTLS_CONFIG_FILE=\"mbedtls/mbedtls_config.h\" -Imbedtls/include
+libmbedtls_la_CFLAGS = -DMBEDTLS_CONFIG_FILE=\"mbedtls/mbedtls_config.h\" -I$(top_srcdir)/others/mbedtls/include
 libmbedtls_la_CPPFLAGS =
 libmbedtls_la_LIBADD =
diff --git a/test/Makefile.am b/test/Makefile.am
index 2c1ba02a..971d9739 100644
--- a/test/Makefile.am
+++ b/test/Makefile.am
@@ -72,7 +72,7 @@ unit_tests_LDFLAGS = \
 
 unit_tests_CPPFLAGS = \
 	-Icommon \
-	-I../ \
+	-I$(srcdir)/../ \
 	-g \
 	-I$(top_builddir)/headers \
 	$(CURL_CFLAGS) \
@@ -127,7 +127,7 @@ regression_tests_LDFLAGS = \
 
 regression_tests_CPPFLAGS = \
 	-Icommon \
-	-I../ \
+	-I$(srcdir)../ \
 	-g \
 	-I$(top_builddir)/headers \
 	$(CURL_CFLAGS) \
@@ -179,7 +179,7 @@ rules_optimization_LDFLAGS = \
 
 rules_optimization_CPPFLAGS = \
 	-Icommon \
-	-I../ \
+	-I$(srcdir)/../ \
 	-g \
 	-I$(top_builddir)/headers \
 	$(CURL_CFLAGS) \