diff --git a/tests/testEOS.c b/tests/testEOS.c
index 2e72d3d1768f3a6ea4ab1665a099efeb28f8f3f9..e14b8d55656af0e4810f47afb9c38570053f2a74 100644
--- a/tests/testEOS.c
+++ b/tests/testEOS.c
@@ -274,5 +274,5 @@ int main(int argc, char *argv[]) {
   return 0;
 }
 #else
-int main() { return 0; }
+int main(int argc, char *argv[]) { return 0; }
 #endif
diff --git a/tests/testFFT.c b/tests/testFFT.c
index eb8a9cc1a20e13b1b363345de39c23f983158460..373b02ecff5231f98d36db4247dfb93fa079feb4 100644
--- a/tests/testFFT.c
+++ b/tests/testFFT.c
@@ -35,7 +35,6 @@ int main(int argc, char *argv[]) { return 0; }
 #include "runner_doiact_fft.h"
 #include "swift.h"
 
-
 __attribute__((always_inline)) INLINE static int row_major_id(int i, int j,
                                                               int k, int N) {
   return (((i + N) % N) * N * N + ((j + N) % N) * N + ((k + N) % N));
diff --git a/tests/testInteractions.c b/tests/testInteractions.c
index 5473dc2588d66e0df2e3e3caddfc04ba3e6f7a2c..b8d4073c179238370684c2b0cf15944e613ce002 100644
--- a/tests/testInteractions.c
+++ b/tests/testInteractions.c
@@ -748,6 +748,6 @@ int main(int argc, char *argv[]) {
 
 #else
 
-int main() { return 1; }
+int main(int argc, char *argv[]) { return 1; }
 
 #endif
diff --git a/tests/testKernelGrav.c b/tests/testKernelGrav.c
index b4a5e4d9f1ff05d8f34840dd19b2a2ccb9ec79b5..36d65ae1d0cc4a7807f60203e8f057e6a9d83cb5 100644
--- a/tests/testKernelGrav.c
+++ b/tests/testKernelGrav.c
@@ -58,7 +58,7 @@ float gadget(float r, float epsilon) {
   }
 }
 
-int main() {
+int main(int argc, char *argv[]) {
 
   const float h = 3.f;
   const float r_max = 6.f;
diff --git a/tests/testUtilities.c b/tests/testUtilities.c
index b835faba9026661361c8828fce5c18beb2b80889..963e4d2233bbd56f7d61d5e2a0d2424006aa63ab 100644
--- a/tests/testUtilities.c
+++ b/tests/testUtilities.c
@@ -23,7 +23,7 @@
 /**
  * @brief Test generic utility functions
  */
-int main() {
+int main(int argc, char *argv[]) {
   /// Test find_value_in_monot_incr_array()
   int n = 100;
   float array[n];