diff --git a/src/common/Logging.h b/src/common/Logging.h
index c43270d5f..c3d56949e 100644
--- a/src/common/Logging.h
+++ b/src/common/Logging.h
@@ -186,7 +186,7 @@ MsgDlgRet CxbxPopupMessageEx(void* hwnd, CXBXR_MODULE cxbxr_module, LOG_LEVEL le
     bTestCaseLogged = true; \
     if (!g_CurrentLogPopupTestcase) break;\
 	LOG_CHECK_ENABLED(LOG_LEVEL::INFO) { \
-		CxbxPopupMsgInfoSimple(nullptr, "Please report that %s shows the following message:\nLOG_TEST_CASE: %s\nIn %s (%s line %d)", \
+		(void)CxbxPopupMsgInfoSimple(nullptr, "Please report that %s shows the following message:\nLOG_TEST_CASE: %s\nIn %s (%s line %d)", \
 		CxbxKrnl_Xbe->m_szAsciiTitle, message, __func__, __FILE__, __LINE__); } } while (0)
 // was g_pCertificate->wszTitleName
 
diff --git a/src/core/kernel/exports/EmuKrnlHal.cpp b/src/core/kernel/exports/EmuKrnlHal.cpp
index d0caeb443..b333ac07c 100644
--- a/src/core/kernel/exports/EmuKrnlHal.cpp
+++ b/src/core/kernel/exports/EmuKrnlHal.cpp
@@ -613,7 +613,7 @@ XBSYSAPI EXPORTNUM(49) xboxkrnl::VOID DECLSPEC_NORETURN NTAPI xboxkrnl::HalRetur
 					retryAttempt++;
 					// Terminate after 5 seconds of failure.
 					if (retryAttempt >= (5 * (1000 / 100))) {
-						CxbxPopupMsgErrorSimple(nullptr, "Could not reboot, new emulation process did not take over.");
+						(void)CxbxPopupMsgErrorSimple(nullptr, "Could not reboot, new emulation process did not take over.");
 						break;
 					}
 				}
diff --git a/src/core/kernel/init/CxbxKrnl.cpp b/src/core/kernel/init/CxbxKrnl.cpp
index fcb729acd..d8803aa30 100644
--- a/src/core/kernel/init/CxbxKrnl.cpp
+++ b/src/core/kernel/init/CxbxKrnl.cpp
@@ -622,7 +622,7 @@ bool CreateSettings()
 {
 	g_Settings = new Settings();
 	if (g_Settings == nullptr) {
-		CxbxPopupMsgErrorSimple(nullptr, szSettings_alloc_error);
+		(void)CxbxPopupMsgErrorSimple(nullptr, szSettings_alloc_error);
 		return false;
 	}
 
@@ -1607,7 +1607,7 @@ bool CxbxLockFilePath()
     }
 
     if (GetLastError() == ERROR_ALREADY_EXISTS) {
-        CxbxPopupMsgErrorSimple(nullptr, "Data path directory is currently in used.\nUse different data path directory or stop emulation from another process.");
+        (void)CxbxPopupMsgErrorSimple(nullptr, "Data path directory is currently in used.\nUse different data path directory or stop emulation from another process.");
         CloseHandle(hMapDataHash);
         return false;
     }
diff --git a/src/gui/DlgLoggingConfig.cpp b/src/gui/DlgLoggingConfig.cpp
index c6b7be381..54324801e 100644
--- a/src/gui/DlgLoggingConfig.cpp
+++ b/src/gui/DlgLoggingConfig.cpp
@@ -147,7 +147,7 @@ INT_PTR CALLBACK DlgLogConfigProc(HWND hWndDlg, UINT uMsg, WPARAM wParam, LPARAM
 			}
 
 			if (LogPopupTestcase) {
-				SendMessage(GetDlgItem(hWndDlg, IDC_LOG_POPUP_TESTCASE), BM_SETCHECK, BST_CHECKED, 0);
+				(void)SendMessage(GetDlgItem(hWndDlg, IDC_LOG_POPUP_TESTCASE), BM_SETCHECK, BST_CHECKED, 0);
 			}
 
 			counter = 0;
diff --git a/src/gui/WinMain.cpp b/src/gui/WinMain.cpp
index bac28b250..71049d773 100644
--- a/src/gui/WinMain.cpp
+++ b/src/gui/WinMain.cpp
@@ -54,26 +54,26 @@ int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine
 	// First detect if we are running on WoW64, if not, prevent Cxbx-Reloaded from starting
 	// Cxbx-Reloaded needs access to high memory, only exposed to WoW64.
 	if (!VerifyWow64()) {
-		CxbxPopupMsgErrorSimple(nullptr, "Cxbx-Reloaded can only run under WoW64\nThis means either a 64-bit version of Windows or Wine with a 64-bit prefix");
+		(void)CxbxPopupMsgErrorSimple(nullptr, "Cxbx-Reloaded can only run under WoW64\nThis means either a 64-bit version of Windows or Wine with a 64-bit prefix");
 		return EXIT_FAILURE;
 	}
 
 #ifndef CXBXR_EMU
 	/*! verify Cxbx.exe is loaded to base address 0x00010000 */
 	if (!VerifyBaseAddr()) {
-		CxbxPopupMsgErrorSimple(nullptr, "Cxbx.exe is not loaded to base address 0x00010000 (which is a requirement for Xbox emulation)");
+		(void)CxbxPopupMsgErrorSimple(nullptr, "Cxbx.exe is not loaded to base address 0x00010000 (which is a requirement for Xbox emulation)");
 		return EXIT_FAILURE;
 	}
 #endif
 
 	if (!cli_config::GenConfig(__argv, __argc)) {
-		CxbxPopupMsgErrorSimple(nullptr, "Couldn't convert parsed command line!");
+		(void)CxbxPopupMsgErrorSimple(nullptr, "Couldn't convert parsed command line!");
 		return EXIT_FAILURE;
 	}
 
 	/*! initialize shared memory */
 	if (!EmuShared::Init(cli_config::GetSessionID())) {
-		CxbxPopupMsgErrorSimple(nullptr, "Could not map shared memory!");
+		(void)CxbxPopupMsgErrorSimple(nullptr, "Could not map shared memory!");
 		return EXIT_FAILURE;
 	}
 
@@ -88,7 +88,7 @@ int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine
 		EmuShared::Cleanup();
 		return EXIT_SUCCESS;
 #else
-		CxbxPopupMsgErrorSimple(nullptr, "Emulation must be launched from cxbxr-ldr.exe!");
+		(void)CxbxPopupMsgErrorSimple(nullptr, "Emulation must be launched from cxbxr-ldr.exe!");
 		EmuShared::Cleanup();
 		return EXIT_FAILURE;
 #endif
@@ -139,7 +139,7 @@ int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine
 
     /*! if an error occurred, notify user */
     if(MainWindow->HasError()) {
-		CxbxPopupMsgErrorSimple(nullptr, MainWindow->GetError().c_str());
+		(void)CxbxPopupMsgErrorSimple(nullptr, MainWindow->GetError().c_str());
     }
 
     delete MainWindow;