3 files changed, 3 insertions, 3 deletions
diff --git a/tests/libdimension/cxx.cpp b/tests/libdimension/cxx.cpp
index f38831a..2f1e3be 100644
--- a/tests/libdimension/cxx.cpp
+++ b/tests/libdimension/cxx.cpp
@@ -24,7 +24,7 @@
  * Ensure that dimension.h can be included in a C++ program and behave properly.
  */
 int
-main()
+main(void)
 {
   /* Make sure we can to bit-ops on this enum type */
   dmnsn_quality quality = DMNSN_RENDER_PIGMENT | DMNSN_RENDER_LIGHTS;
diff --git a/tests/libdimension/list.c b/tests/libdimension/list.c
index 5301abf..0af2cc0 100644
--- a/tests/libdimension/list.c
+++ b/tests/libdimension/list.c
@@ -38,7 +38,7 @@ dmnsn_comparator(const dmnsn_list_iterator *i, const dmnsn_list_iterator *j)
 }
 
 int
-main()
+main(void)
 {
   /* Set the resilience low for tests */
   dmnsn_set_resilience(DMNSN_SEVERITY_LOW);
diff --git a/tests/libdimension/polynomial.c b/tests/libdimension/polynomial.c
index b04adf7..db3b8d0 100644
--- a/tests/libdimension/polynomial.c
+++ b/tests/libdimension/polynomial.c
@@ -26,7 +26,7 @@
 #include <stdio.h>
 
 int
-main()
+main(void)
 {
   /* Set the resilience low for tests */
   dmnsn_set_resilience(DMNSN_SEVERITY_LOW);