diff --git a/configure.ac b/configure.ac
index 360516a..abfb59a 100644
--- a/configure.ac
+++ b/configure.ac
@@ -333,7 +333,6 @@ AC_MSG_RESULT([
 AC_CONFIG_FILES([Makefile
                 src/Makefile
                 tests/Makefile
-        		tests/test_config.h
                 config/Makefile
                 config/gdlib-config
                 config/gdlib.pc])
diff --git a/tests/.gitignore b/tests/.gitignore
index 9422fc4..7e563b8 100644
--- a/tests/.gitignore
+++ b/tests/.gitignore
@@ -1,4 +1,2 @@
 *.log
 *.trs
-
-/test_config.h
diff --git a/tests/Makefile.am b/tests/Makefile.am
index afdcd5d..21cfb0d 100644
--- a/tests/Makefile.am
+++ b/tests/Makefile.am
@@ -4,6 +4,7 @@ libgdtest_a_SOURCES = \
 	gdtest/gdtest.c \
 	gdtest/gdtest.h \
 	gdhelpers.c
+libgdtest_a_CPPFLAGS = $(AM_CPPFLAGS) -DGDTEST_TOP_DIR='"$(srcdir)"'
 
 # Setup vars that subdirs will increment.
 libgd_test_programs =
@@ -63,7 +64,7 @@ include xbm/Makemodule.am
 include xpm/Makemodule.am
 
 LDADD = libgdtest.a ../src/libgd.la
-AM_CPPFLAGS = -I$(top_srcdir)/src -I $(top_srcdir)/tests/gdtest
+AM_CPPFLAGS = -I$(top_srcdir)/src -I$(top_srcdir)/tests/gdtest
 
 check_PROGRAMS = $(libgd_test_programs) $(libgd_helper_programs)
 TESTS += $(libgd_test_programs)
diff --git a/tests/gdimagefile/gdnametest.c b/tests/gdimagefile/gdnametest.c
index 40dbc30..eef561a 100644
--- a/tests/gdimagefile/gdnametest.c
+++ b/tests/gdimagefile/gdnametest.c
@@ -4,7 +4,6 @@
 
 #include "gd.h"
 #include "gdtest.h"
-#include "test_config.h"
 
 #define WIDTH 60
 #define HEIGHT 50
diff --git a/tests/gdtest/CMakeLists.txt b/tests/gdtest/CMakeLists.txt
index 5f89bc9..4b05262 100644
--- a/tests/gdtest/CMakeLists.txt
+++ b/tests/gdtest/CMakeLists.txt
@@ -1,4 +1,3 @@
-SET(GDTEST_TOP_DIR "${GD_SOURCE_DIR}/tests")
-CONFIGURE_FILE(test_config.h.cmake test_config.h ESCAPE_QUOTES)
+add_definitions(-DGDTEST_TOP_DIR="${CMAKE_CURRENT_SOURCE_DIR}/..")
 add_library (gdTest STATIC gdtest.c)
 target_link_libraries(gdTest ${GD_LIB})
diff --git a/tests/gdtest/Makemodule.am b/tests/gdtest/Makemodule.am
index 5b4e39e..a68842e 100644
--- a/tests/gdtest/Makemodule.am
+++ b/tests/gdtest/Makemodule.am
@@ -1,5 +1,4 @@
 # Note: Library is declared in tests/Makefile.am as it's used by all the tests.
 
 EXTRA_DIST += \
-	gdtest/CMakeLists.txt \
-	gdtest/test_config.h.cmake
+	gdtest/CMakeLists.txt
diff --git a/tests/gdtest/gdtest.c b/tests/gdtest/gdtest.c
index 93fb6e6..a75e101 100644
--- a/tests/gdtest/gdtest.c
+++ b/tests/gdtest/gdtest.c
@@ -27,7 +27,6 @@
 #include "gd.h"
 
 #include "gdtest.h"
-#include "test_config.h"
 
 /* max is already defined in windows/msvc */
 #ifndef max
diff --git a/tests/gdtest/gdtest.h b/tests/gdtest/gdtest.h
index c831c10..e6cb2c5 100644
--- a/tests/gdtest/gdtest.h
+++ b/tests/gdtest/gdtest.h
@@ -2,7 +2,6 @@
 #define GD_TEST_H
 
 #include <stdarg.h>
-#include "test_config.h"
 
 typedef struct CuTestImageResult CuTestImageResult;
 struct CuTestImageResult {
diff --git a/tests/gdtest/test_config.h.cmake b/tests/gdtest/test_config.h.cmake
deleted file mode 100644
index 59d2f0c..0000000
--- a/tests/gdtest/test_config.h.cmake
+++ /dev/null
@@ -1,4 +0,0 @@
-/* Define the full path to the top src dir, required to get the path
- * of each input data */
-#cmakedefine GDTEST_TOP_DIR "@GDTEST_TOP_DIR@"
-
diff --git a/tests/test_config.h.in b/tests/test_config.h.in
deleted file mode 100644
index 78a6588..0000000
--- a/tests/test_config.h.in
+++ /dev/null
@@ -1,7 +0,0 @@
-#ifndef GD_TEST_CONFIG_H
-#define GD_TEST_CONFIG_H
-/* Define the full path to the top src dir, required to get the path
- * of each input data */
-#define GDTEST_TOP_DIR "@srcdir@"
-#endif
-