diff --git a/contrib/build-linux/appimage/make_appimage.sh b/contrib/build-linux/appimage/make_appimage.sh
index 471b229a1..a1031eab2 100755
--- a/contrib/build-linux/appimage/make_appimage.sh
+++ b/contrib/build-linux/appimage/make_appimage.sh
@@ -78,7 +78,7 @@ info "installing python."
 )
 
 
-if [ -f "$DLL_TARGET_DIR/libsecp256k1.so.2" ]; then
+if ls "$DLL_TARGET_DIR"/libsecp256k1.so.* 1> /dev/null 2>&1; then
     info "libsecp256k1 already built, skipping"
 else
     "$CONTRIB"/make_libsecp256k1.sh || fail "Could not build libsecp"
diff --git a/contrib/build-wine/make_win.sh b/contrib/build-wine/make_win.sh
index 5a13ea744..13ee21d90 100755
--- a/contrib/build-wine/make_win.sh
+++ b/contrib/build-wine/make_win.sh
@@ -43,7 +43,7 @@ rm "$here"/dist/* -rf
 
 mkdir -p "$CACHEDIR" "$DLL_TARGET_DIR" "$PIP_CACHE_DIR"
 
-if [ -f "$DLL_TARGET_DIR/libsecp256k1-2.dll" ]; then
+if ls "$DLL_TARGET_DIR"/libsecp256k1-*.dll 1> /dev/null 2>&1; then
     info "libsecp256k1 already built, skipping"
 else
     "$CONTRIB"/make_libsecp256k1.sh || fail "Could not build libsecp"
diff --git a/contrib/osx/make_osx.sh b/contrib/osx/make_osx.sh
index 66bf9a40a..3b223059c 100755
--- a/contrib/osx/make_osx.sh
+++ b/contrib/osx/make_osx.sh
@@ -145,11 +145,11 @@ info "preparing electrum-locale."
 ) || fail "failed generating locale"
 
 
-if [ ! -f "$DLL_TARGET_DIR/libsecp256k1.2.dylib" ]; then
+if ls "$DLL_TARGET_DIR"/libsecp256k1.*.dylib 1> /dev/null 2>&1; then
+    info "libsecp256k1 already built, skipping"
+else
     info "Building libsecp256k1 dylib..."
     "$CONTRIB"/make_libsecp256k1.sh || fail "Could not build libsecp"
-else
-    info "Skipping libsecp256k1 build: reusing already built dylib."
 fi
 #cp -f "$DLL_TARGET_DIR"/libsecp256k1.*.dylib "$PROJECT_ROOT/electrum" || fail "Could not copy libsecp256k1 dylib"