diff --git a/packaging/android/qmake-build.sh b/packaging/android/qmake-build.sh
index 564c978a7..229f3e0d2 100755
--- a/packaging/android/qmake-build.sh
+++ b/packaging/android/qmake-build.sh
@@ -85,7 +85,7 @@ pushd "$BUILDROOT"/subsurface-mobile-build
 
 # set up the Subsurface versions by hand
 CANONICALVERSION=$("$SUBSURFACE_SOURCE"/scripts/get-version)
-echo "#define CANONICAL_VERSION_STRING \"$CANONICALVERSION\"" >> ssrf-version.h
+echo "#define CANONICAL_VERSION_STRING \"$CANONICALVERSION\"" > ssrf-version.h
 CANONICALVERSION_4=$("$SUBSURFACE_SOURCE"/scripts/get-version 4)
 echo "#define CANONICAL_VERSION_STRING_4 \"$CANONICALVERSION_4\"" >> ssrf-version.h
 popd
diff --git a/packaging/ios/build.sh b/packaging/ios/build.sh
index 35fabfd57..ff374a12e 100755
--- a/packaging/ios/build.sh
+++ b/packaging/ios/build.sh
@@ -78,7 +78,7 @@ fi
 
 # set up the Subsurface versions by hand
 CANONICALVERSION=$("$SUBSURFACE_SOURCE"/scripts/get-version)
-echo "#define CANONICAL_VERSION_STRING \"$CANONICALVERSION\"" >> "$SUBSURFACE_SOURCE"/ssrf-version.h
+echo "#define CANONICAL_VERSION_STRING \"$CANONICALVERSION\"" > "$SUBSURFACE_SOURCE"/ssrf-version.h
 CANONICALVERSION_4=$("$SUBSURFACE_SOURCE"/scripts/get-version 4)
 echo "#define CANONICAL_VERSION_STRING_4 \"$CANONICALVERSION_4\"" >> "$SUBSURFACE_SOURCE"/ssrf-version.h