diff --git a/Source/Project64-audio/Version.h.in b/Source/Project64-audio/Version.h.in
index 6a998d84b..38b7cc5f9 100644
--- a/Source/Project64-audio/Version.h.in
+++ b/Source/Project64-audio/Version.h.in
@@ -5,7 +5,7 @@
 #define VERSION_MINOR               0
 #define VERSION_REVISION            0
 #define VERSION_BUILD               9999
-#define VERSION_PREFIX              ""
+#define VERSION_PREFIX              "Dev-"
 
 #define GIT_REVISION                ""
 #define GIT_REVISION_SHORT          ""
diff --git a/Source/Project64-core/Version.h.in b/Source/Project64-core/Version.h.in
index 6925d32f3..17c7716c0 100644
--- a/Source/Project64-core/Version.h.in
+++ b/Source/Project64-core/Version.h.in
@@ -5,7 +5,7 @@
 #define VERSION_MINOR               0
 #define VERSION_REVISION            0
 #define VERSION_BUILD               9999
-#define VERSION_PREFIX              ""
+#define VERSION_PREFIX              "Dev-"
 
 #define GIT_REVISION                ""
 #define GIT_REVISION_SHORT          ""
diff --git a/Source/Project64-input/Version.h.in b/Source/Project64-input/Version.h.in
index dfc468d7c..79defbcec 100644
--- a/Source/Project64-input/Version.h.in
+++ b/Source/Project64-input/Version.h.in
@@ -5,7 +5,7 @@
 #define VERSION_MINOR               0
 #define VERSION_REVISION            0
 #define VERSION_BUILD               9999
-#define VERSION_PREFIX              ""
+#define VERSION_PREFIX              "Dev-"
 
 #define GIT_REVISION                ""
 #define GIT_REVISION_SHORT          ""
diff --git a/Source/Project64-video/Version.h.in b/Source/Project64-video/Version.h.in
index a47fad022..e7e4552d5 100644
--- a/Source/Project64-video/Version.h.in
+++ b/Source/Project64-video/Version.h.in
@@ -5,7 +5,7 @@
 #define VERSION_MINOR               0
 #define VERSION_REVISION            0
 #define VERSION_BUILD               9999
-#define VERSION_PREFIX              ""
+#define VERSION_PREFIX              "Dev-"
 
 #define GIT_REVISION                ""
 #define GIT_REVISION_SHORT          ""
diff --git a/Source/RSP/Version.h.in b/Source/RSP/Version.h.in
index 6fa36acb9..eaf0830f6 100644
--- a/Source/RSP/Version.h.in
+++ b/Source/RSP/Version.h.in
@@ -5,7 +5,7 @@
 #define VERSION_MINOR               0
 #define VERSION_REVISION            0
 #define VERSION_BUILD               9999
-#define VERSION_PREFIX              ""
+#define VERSION_PREFIX              "Dev-"
 
 #define GIT_REVISION                ""
 #define GIT_REVISION_SHORT          ""
diff --git a/Source/nragev20/Version.h.in b/Source/nragev20/Version.h.in
index 41946bb43..a7aa0cf6e 100644
--- a/Source/nragev20/Version.h.in
+++ b/Source/nragev20/Version.h.in
@@ -27,7 +27,7 @@ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 #define VERSION_MINOR               0
 #define VERSION_REVISION            0
 #define VERSION_BUILD               9999
-#define VERSION_PREFIX              ""
+#define VERSION_PREFIX              "Dev-"
 
 #define GIT_REVISION                ""
 #define GIT_REVISION_SHORT          ""