diff --git a/test/datatype/integer_test.cpp b/test/datatype/integer_test.cpp
index 05fdf3fdee..17c886368e 100644
--- a/test/datatype/integer_test.cpp
+++ b/test/datatype/integer_test.cpp
@@ -50,7 +50,7 @@ TYPED_TEST(Integer, Exceptions) {
 TEMPLATE_TEST_CASE("general integer properties",
                    "[datatype][numeric][integer]",
                    unsigned char,
-                   char,
+                   signed char,
                    short,
                    unsigned short,
                    int,
@@ -138,7 +138,7 @@ TEMPLATE_TEST_CASE("general integer properties",
 TEMPLATE_TEST_CASE("general integer properties with cref",
                    "[datatype][numeric][integer]",
                    unsigned char,
-                   char,
+                   signed char,
                    short,
                    unsigned short,
                    int,
@@ -184,7 +184,7 @@ TEMPLATE_TEST_CASE("general integer properties with cref",
 
 TEMPLATE_TEST_CASE("signed integer properties",
                    "[datatype][numeric][integer]",
-                   char,
+                   signed char,
                    short,
                    int,
                    long,
@@ -205,7 +205,7 @@ TEMPLATE_TEST_CASE("signed integer properties",
 
 TEMPLATE_TEST_CASE("signed integer properties with cref",
                    "[datatype][numeric][integer]",
-                   char,
+                   signed char,
                    short,
                    int,
                    long,